The GOP presidential candidate said he would ban immigrants from sending money home to Mexico.

Donald Trump’s proposal to force Mexico to pay for a Wall guarding against the flux of immigrants into the U.S. made news this week, and rightfully so. Trump’s idea would be to curtail the ability of banks, credit unions, and wire transmission companies to send money abroad — a sharp departure from policy and law whose bipartisan aim has been to bring remittances to all countries into the financial mainstream and out from the shadowy illegal word of people moving cash in suitcases.

Encouraging remittances to go through the financial system benefits everyone: it enhances the ability to combat terrorist finance and money-laundering, it reduces crime in both the U.S. and abroad, it increases economic growth in the U.S. and overseas, and it provides for greater competition and market incentives to allow people to keep more of their hard-earned money to use as they see fit. Moving in the opposite direction would be a major mistake.

This is a big issue that affects a lot more people than one might think – more than just sending money to Mexico. In America today, more than 40 million people were born in other countries, a record number. This translates into just more than 1 in 8 Americans, a sharp increase from 1970 when fewer than 1 in 25 Americans were foreign born. Thus, it is not surprising that many people perceive America to have more foreign-born people than any time in their lifetime. However, that is not the case for the lifetime of America. Between the Civil War and the 1920s, America had as high — or higher — share of foreign born as we do today.

Remittances are not a new phenomenon. Most American families likely sent remittances at some point whenever their family first immigrated. My great-grand father sent money back to what is today the Czech Republic so that his wife and their children (including my grandmother) could come and join him and escape what became the Second World War. Today, remittance flows go toward the new generation of American immigrants and the children of those immigrants. More than $120 billion was sent abroad in 2012 according to the Pew Center and while it is true that Mexico received the largest amount at just under $23 billion, the rest of the top 5 countries may surprise you: China ($13 billion), India ($12 billion), Philippines ($10.5 billion), and Nigeria ($6 billion). And old habits remain as Germany ($2.5 billion) and France ($2 billion) are still among the top 15 countries that receive remittances from the United States.

This money comes in lots of small chunks, which can make sending it expensive. The typical new migrant worker sends money home around 14 times a year, which corresponds to once a month plus Mother’s Day and Christmas. These are usually small sums (less than $300) and represent an extraordinary level of savings given the worker’s income. The money goes through both the formal banking system including banks, credit unions, and wire transmitters who eventually use banks like Western Union and MoneyGram. Some goes through informal means, including “viajeros” who are people that literally carry cash in suitcases on planes that are often breaking the law and outside of the standard anti-money laundering and terrorist finance enforcement system. Why would anyone want to encourage that?

The idea of using this flow of funds to try to implement other policy objectives, such as border control, would be a sharp departure from current practice. The Patriot Act and subsequent federal law governing remittances in financial laws like the Dodd-Frank Act were never intended to be used to threaten to cut off the flow of migrant worker remittances. These laws were intended to track and crack down on the flow of money laundering or support for illegal and terrorist organizations while at the same time providing consumer protections to workers who are sending hard-earned cash back home to their parents, grandparents, and children. In fact, the bipartisan goal of policy concerning remittances has been to encourage the flow of money to come into the official system and to discourage the flow of funds through the underground network.

In 2004, then Federal Reserve Governor Ben Bernanke made clear that, “The Federal Reserve is attempting to support banks’ efforts to better serve immigrant populations, with remittances and other money transfers being a key area of interest.” House Financial Services Chairman Mike Oxley (R-OH) told President Bush’s then-Treasury Secretary John Snow, “Remittances between established and emerging economies foster growth in both types of economies simultaneously. I will be interested in hearing your views on how unnecessary costs can be eliminated in this area.” When Senator Paul S. Sarbanes (D-MD) introduced legislation that became the basis for today’s law that covers remittances, he had the simple goal to “increase transparency, competition and efficiency in the remittance market, while helping to bring more Americans into the financial mainstream.”

The longstanding bipartisan support for bringing remittances into the financial mainstream is based on the fact that most immigrants, regardless of whether they are U.S. citizens, legal residents, or undocumented, send remittances. A system that tried to assert proof of citizenship or legal status upon wiring money overseas would be burdensome, costly, and ineffective at best and if effective, it would simply drive more money into illegal transmission schemes while increasing crime here in the U.S. and abroad. Imagine if an entire community knew that someone would be walking through their immigrant neighborhood with a suitcase full of tens of thousands of dollars in cash.

Thought of another way, if I went to the bank to send money to my mother who lives in France part of the year, how would I prove that I’m a citizen? My driver’s license alone is not proof of legal status. Would I need to bring my passport? What if, like the majority of Americans, (62% according to the State Department) I don’t have a valid passport? Would I have to bring my birth certificate to the local Western Union? I guess the one positive thing from such a system is that it would help stop the email scams asking for money from a Nigerian Prince….

Aaron Klein is a fellow at the Brookings Institution and served as Deputy Assistant Secretary of the US Treasury Department from 2009 to 2012. He also serves as an unpaid member of the Clinton campaign’s Infrastructure Finance Working Group; he has not served as an advisor on any banking or finance issues.

Editor’s note: This piece originally appeared on Fortune.

Editors’ Note: Turkey’s failed coup may lead to the worsening of Europe’s migration crisis, writes Jessica Brandt. That’s because it could lead to the dissolution of a recent pact between Brussels and Ankara over the plight of refugees arriving on the European Union’s shores. This post originally appeared on Vox.

Turkey’s recent failed coup may lead to the worsening of Europe’s migration crisis. That’s because it could lead to the dissolution of a recent pact between Brussels and Ankara over the plight of refugees arriving on the European Union’s shores. Even before the events of last weekend, the fate of the agreement was uncertain amid quarrels between the parties. Now its future is even more in doubt.

Last year, more than a million migrants and refugees crossed into Europe, roiling politics across the continent. It’s a crisis EU chief Donald Tusk has described as an “existential challenge.”

Under the terms of the deal, Turkey agreed to accept the “rapid return of all migrants not in need of international protection crossing from Turkey into Greece and to take back all irregular migrants intercepted in Turkish waters.” In other words, almost all refugees who cross into Greece are slated to be returned to Turkish soil.

In return, the EU pledged to speed up the allocation of €3 billion in aid to Turkey to help it house and care for refugees, “reenergize” Turkey's bid for membership in the EU, and lift visa restrictions on Turkish tourists and businessmen.

But the European Commission has conditioned changes to the visa restrictions on better governance in Turkey. In particular, it requires a change in President Recep Tayyip Erdoğan’s controversial anti-terror law, which he has used to crack down on journalists and critics. Erdoğan was already adamantly against narrowing the law to protect free speech. Having now overcome a determined coup attempt, he is even less likely to do so.

Instead, it appears probable that he will further clamp down on civil liberties, acting on his authoritarian instincts and retaliating against his detractors. On Sunday, he suggested that he might reintroduce the death penalty, a practice Turkey abolished in 2004 as part of its bid for EU membership. Doing so would widen the gap in political culture between Turkey and Europe and, as German Foreign Minister Frank-Walter Steinmeier asserted forcefully on Monday in Brussels, derail the already limited possibility of reigniting accession talks.

The pact has already been strongly opposed by the European left, and particularly by humanitarian and human rights groups. Rising authoritarianism in Turkey would only increase resistance to the deal, making implementation even harder, especially if those groups were to scale back their activities on the ground.

That would not be without precedent. The United Nations High Commissioner for Refugees, Doctors Without Borders, and the International Rescue Committee, among others, have suspended some of their activities in refugee centers because they do not want to be involved in implementing a deal that they describe as constituting the blanket expulsion of refugees from Turkey back to Greece.

[A] crackdown could also undermine the legal basis of the agreement.

Crucially, a crackdown could also undermine the legal basis of the agreement. One of the agreement’s key provisions is that individuals who cross from Turkey into Greece will be sent back across the Aegean to Turkey. That hinges on the notion that Turkey is a “safe third country” for migrants. A crackdown could prompt refugees to argue that it isn’t.

If that were the case, deporting them to Turkey could be seen as constituting “refoulement”—the forcible return of asylum seekers to a country where they are prone to be subjected to persecution—which is forbidden under both international and EU law.

That’s a problem, since some analysts believe worsening conditions in Turkey could lead even more people seeking refuge to journey onward to Europe. In the past, Erdoğan has threatened to “open the gates” and send refugees streaming into Europe when displeased with the level of financial assistance from Brussels earmarked for managing the crisis. Preoccupied by troubles at home, he may see stability as in his interest and resist taking aggressive steps that would cause an open breach.

For both parties, finding a stable, though imperfect, accommodation—as they were poised to do prior to the events of last weekend—is still the most promising path forward. Let’s hope the parties take it. Managing Europe’s migration crisis depends on it.

INTRODUCTION

In August, 2010 the government of Kenya adopted a new constitution. This followed a referendum in which an overwhelming majority of Kenyans voted for change. The decisive impetus for reform came from the widespread violence and political crisis that followed the 2007 election. While claims of electoral fraud provided the immediate catalyst for violence, the deeper causes were to be found in the interaction of a highly centralized ‘winner-take-all’ political system with deep social disparities based in part on group identity (Hanson 2008).

Provisions for equity figure prominently in the new constitution. Backed by a bill of rights that opens the door to legal enforcement, citizenship rights have been strengthened in many areas,including access to basic services. ‘Equitable sharing’ has been introduced as a guiding principle for public spending. National and devolved governments are now constitutionally required to redress social disparities, target disadvantaged areas and provide affirmative action for marginalized groups.

Translating these provisions into tangible outcomes will not be straightforward. Equity is a principle that would be readily endorsed by most policymakers in Kenya and Kenya’s citizens have provided their own endorsement through the referendum. However, there is an ongoing debate over what the commitment to equity means in practice, as well as over the pace and direction of reform. Much of that debate has centered on the constitutional injunction requiring ‘equitable sharing’ in public spending.

On most measures of human development, Kenya registers average outcomes considerably above those for sub-Saharan Africa as a region. Yet the national average masks extreme disparities—and the benefits of increased prosperity have been unequally shared.

There are compelling grounds for a strengthened focus on equity in Kenya. In recent years, the country has maintained a respectable, if less than spectacular, record on economic growth. Social indicators are also on an upward trend. On most measures of human development, Kenya registers average outcomes considerably above those for sub-Saharan Africa as a region. Yet the national average masks extreme disparities—and the benefits of increased prosperity have been unequally shared. Some regions and social groups face levels of deprivation that rank alongside the worst in Africa. Moreover, the deep fault lines running through society are widely perceived as a source of injustice and potential political instability.

High levels of inequality in Kenya raise wider concerns. There has been a tendency in domestic debates to see ‘equitable sharing’ as a guiding principle for social justice, rather than as a condition for accelerated growth and enhanced economic efficiency. Yet international evidence strongly suggests that extreme inequality—especially in opportunities for education— is profoundly damaging for economic growth. It follows that redistributive public spending has the potential to support growth.

The current paper focuses on a group of 12 counties located in Kenya’s Arid and Semi-Arid Lands (ASALs). They are among the most disadvantaged in the country. Most are characterized by high levels of income poverty, chronic food insecurity and acute deprivation across a wide range of social indicators.

Nowhere is the deprivation starker than in education. The ASAL counties account for a disproportionately large share of Kenya’s out-of-school children, pointing to problems in access and school retention. Gender disparities in education are among the widest in the country. Learning outcomes for the small number of children who get through primary school are for the most part abysmal, even by the generally low national average standards.

Unequal public spending patterns have played no small part in creating the disparities that separate the ASAL counties from the rest of Kenya—and ‘equitable sharing’ could play a role in closing the gap. But what would a more equitable approach to public spending look like in practice?

This paper addresses that question. It looks in some detail at education for two reasons. First, good quality education is itself a powerful motor of enhanced equity. It has the potential to equip children and youth with the skills and competencies that they need to break out of cycles of poverty and to participate more fully in national prosperity. If Kenya is to embark on a more equitable pattern of development, there are strong grounds for prioritizing the creation of more equal opportunities in education. Second, the education sector illustrates many of the wider challenges and debates that Kenya’s policymakers will have to address as they seek to translate constitutional provisions into public spending strategies. In particular, it highlights the importance of weighting for indicators that reflect need in designing formulae for budget allocations.

Our broad conclusion is that, while Kenya clearly needs to avoid public spending reforms that jeopardize service delivery in wealthier counties, redistributive measures are justified on the grounds of efficiency and equity.

The paper is organized as follows. Part 1 provides an overview of the approach to equity enshrined in the constitution. While the spirit of the constitution is unequivocal, the letter is open to a vast array of interpretations. We briefly explore the implications of a range of approaches. Our broad conclusion is that, while Kenya clearly needs to avoid public spending reforms that jeopardize service delivery in wealthier counties, redistributive measures are justified on the grounds of efficiency and equity. Although this paper focuses principally on basic services, we caution against approaches that treat equity as a matter of social sector financing to the exclusion of growth-oriented productive investment.

Part 2 provides an analysis of some key indicators on poverty, health and nutrition. Drawing on household expenditure data, the report locates the 12 ASAL counties in the national league table for the incidence and depth of poverty. Data on health outcomes and access to basic services provide another indicator of the state of human development. While there are some marked variations across counties and indicators, most of the 12 counties register levels of deprivation in poverty and basic health far in excess of those found in other areas.

Part 3 shifts the focus to education. Over the past decade, Kenya has made considerable progress in improving access to basic education. Enrollment rates in primary education have increased sharply since the elimination of school fees in 2003. Transition rates to secondary school are also rising. The record on learning achievement is less impressive. While Kenya lacks a comprehensive national learning assessment, survey evidence points to systemic problems in education quality. In both access and learning, children in the ASAL counties—especially female children—are at a considerable disadvantage. After setting out the national picture, the paper explores the distinctive problems facing these counties.

In Part 4 we look beyond Kenya to wider international experience. Many countries have grappled with the challenge of reducing disparities between less-favored and more-favored regions. There are no blueprints on offer. However, there are some useful lessons and guidelines that may be of some relevance to the policy debate in Kenya. The experience of South Africa may be particularly instructive given the weight attached to equity in the post-apartheid constitution.

Part 5 of the paper explores a range of approaches to financial allocations. Converting constitutional principle into operational practice will require the development of formulae-based approaches. From an equitable financing perspective there is no perfect model. Any formula that is adopted will involve trade-offs between different goals. Policymakers have to determine what weight to attach to different dimensions of equity (for example, gender, income, education and health), the time frame for achieving stated policy goals, and whether to frame targets in terms of outcomes or inputs. These questions go beyond devolved financing. The Kenyan constitution is unequivocal in stipulating that the ‘equitable sharing’ provision applies to all public spending. We therefore undertake a series of formula-based exercises illustrating the allocation patterns that would emerge under different formulae, with specific reference to the 12 ASAL focus counties and to education.

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First it was the Europeans who sought an escape from the tragic realities of power that had bloodied their 20th century. At the end of the Cold War, they began to disarm themselves in the hopeful belief that arms and traditional measures of power no longer mattered. A new international system of laws and institutions would replace the old system of power; the world would model itself on the European Union—and if not, the U.S. would still be there to provide security the old-fashioned way.

But now, in the wake of the wars in Iraq and Afghanistan, it is the U.S. that seems to be yearning for an escape from the burdens of power and a reprieve from the tragic realities of human existence.

Until recent events at least, a majority of Americans (and of the American political and intellectual classes) seem to have come close to concluding not only that war is horrible but also that it is ineffective in our modern, globalized world. "There is an evolving international order with new global norms making war and conquest increasingly rare," wrote Fareed Zakaria of CNN, borrowing from Steven Pinker of Harvard, practically on the eve of Russia's invasion of Ukraine and the Islamic State's march across Syria and Iraq. Best-selling histories of World War I teach that nations don't willingly go to war but only "sleepwalk" into them due to tragic miscalculations or downright silliness.

For a quarter-century, Americans have been told that at the end of history lies boredom rather than great conflict, that nations with McDonald's never fight one another, that economic interdependence and nuclear weapons make war among great powers unlikely if not impossible. Recently added to these nostrums has been the mantra of futility. "There is no military solution" is the constant refrain of Western statesmen regarding conflicts from Syria to Ukraine; indeed, military action only makes problems worse. Power itself isn't even what it used to be, argued the columnist Moisés Naím in a widely praised recent book.

History has a way of answering such claims. The desire to escape from power is certainly not new; it has been the constant aspiration of Enlightenment liberalism for more than two centuries.

The impossibility of war was conventional wisdom in the years before World War I, and it became conventional wisdom again—at least in Britain and the U.S.—practically the day after the war ended. Then as now, Americans and Britons solipsistically believed that everyone shared their disillusionment with war. They imagined that because war was horrible and irrational, as the Great War had surely demonstrated, no sane people would choose it.

What happened next, as the peaceful 1920s descended into the violent and savage 1930s, may be instructive for our own time. Back then, the desire to avoid war—combined with the surety that no nation could rationally seek it—led logically and naturally to policies of appeasement.

The countries threatening aggression, after all, had grievances, as most countries almost always do. They were "have-not" powers in a world dominated by the rich and powerful Anglo-Saxon nations, and they demanded a fairer distribution of the goods. In the case of Germany, resentment over the Versailles peace settlement smoldered because territories and populations once under Germany's control had been taken away to provide security for Germany's neighbors. In the case of Japan, the island power with the overflowing population needed control of the Asian mainland to survive and prosper in competition with the other great powers.

So the liberal powers tried to reason with them, to understand and even accept their grievances and seek to assuage them, even if this meant sacrificing others—the Chinese and the Czechs, for instance—to their rule. It seemed a reasonable price, unfortunate though it might be, to avoid another catastrophic war. This was the realism of the 1930s.

Eventually, however, the liberal powers discovered that the grievances of the "have-not" powers went beyond what even the most generous and conflict-averse could satisfy. The most fundamental grievance, it turned out, was that of being forced to live in a world shaped by others—to be German or Japanese in a world dominated by Anglo-Saxons.

To satisfy this grievance would require more than marginal territorial or economic adjustments or even the sacrifice of a small and weak state here or there. It would require allowing the "have-not" powers to reshape the international political and economic order to suit their needs. More than that, it would require letting those powers become strong enough to dictate the terms of international order—for how else could they emerge from their unjust oppression?

Finally, it became clear that more was going on than rational demands for justice, at least as the Enlightenment mind understood the term. It turned out that the aggressors' policies were the product not only of material grievances but of desires that transcended mere materialism and rationality.

Their leaders, and to a great extent their publics, rejected liberal notions of progress and reason. They were moved instead by romantic yearnings for past glories or past orders and rejected Enlightenment notions of modernity. Their predatory or paranoid rulers either fatalistically accepted (in the case of Japan) or positively welcomed (in the case of Germany) armed conflict as the natural state of human affairs.

By the time all this became unmistakably obvious to the liberal powers, by the time they realized that they were dealing with people who didn't think as they did, by the time they grasped that nothing short of surrender would avoid conflict and that giving the aggressors even part of what they demanded—Manchuria, Indochina, Czechoslovakia—only strengthened them without satisfying them, it was too late to avoid precisely the world war that Britain, France, the U.S. and others had desperately tried to prevent.

This searing experience—not just World War II but also the failed effort to satisfy those who couldn't be satisfied—shaped U.S. policy in the postwar era. For the generations that shared this experience, it imposed a new and different sense of realism about the nature of humankind and the international system. Hopes for a new era of peace were tempered.

American leaders and the American public generally if regretfully accepted the inescapable and tragic reality of power. They adopted the posture of armed liberalism. They built unimaginably destructive weapons by the thousands. They deployed hundreds of thousands of troops overseas, in the heart of Europe and along the rim of East Asia, to serve as forward deterrents to aggression. They fought wars in distant and largely unknown lands, sometimes foolishly and sometimes ineffectively but always with the idea—almost certainly correct—that failure to act against aggressors would only invite further aggression.

In general, except for a brief bout of fatalism under President Richard Nixon and former Secretary of State Henry Kissinger, they were disinclined to assuage or even acknowledge the grievances of those who opposed them. (President Harry Truman and Secretary of State Dean Acheson, the architects of armed liberalism, never had much interest in bargaining with the Soviets, while President Ronald Reagan was interested chiefly in bargaining over the terms of their surrender.)

Behind the actions of the U.S. architects of containment lay the belief, based on hard experience, that other peoples couldn't always be counted on to value what the liberal world valued—prosperity, human rights or even peace—and therefore the liberal world had to be constantly on its guard, well-armed and well-prepared against the next stirring of the non-liberal, atavistic urges that were a permanent feature of humankind.

How much easier it was to maintain this tragic vigilance while the illiberal, conflict-based ideology of communism reigned across more than half of the Eurasian continent—and how much harder has it been to sustain that vigilance since the fall of communism seemingly ushered in a new era of universal liberalism, and with it the prospect, finally, of a Kantian peace in a world dominated by democracy.

For a time in the 1990s, while the generations of World War II and the early Cold War survived, the old lessons still guided policy. President George H.W. Bush and his national security adviser, Brent Scowcroft, sent half a million American troops to fight thousands of miles away for no other reason than to thwart aggression and restore a desert kingdom that had been invaded by its tyrant neighbor. Kuwait enjoyed no security guarantee with the U.S.; the oil wells on its lands would have been equally available to the West if operated by Iraq; and the 30-year-old emirate ruled by the al-Sabah family had less claim to sovereign nationhood than Ukraine has today. Nevertheless, as Mr. Bush later recalled, "I wanted no appeasement."

A little more than a decade later, however, the U.S. is a changed country. Because of the experiences in Iraq and Afghanistan, to suggest sending even a few thousand troops to fight anywhere for any reason is almost unthinkable. The most hawkish members of Congress don't think it safe to argue for a ground attack on the Islamic State or for a NATO troop presence in Ukraine. There is no serious discussion of reversing the cuts in the defense budget, even though the strategic requirements of defending U.S. allies in Europe, Asia and the Middle East have rarely been more manifest while America's ability to do so has rarely been more in doubt.

But Americans, their president and their elected representatives have accepted this gap between strategy and capability with little comment—except by those who would abandon the strategy. It is as if, once again, Americans believe their disillusionment with the use of force somehow means that force is no longer a factor in international affairs.

In the 1930s, this illusion was dispelled by Germany and Japan, whose leaders and publics very much believed in the utility of military power. Today, as the U.S. seems to seek its escape from power, others are stepping forward, as if on cue, to demonstrate just how effective raw power really can be.

Once again, they are people who never accepted the liberal world's definition of progress and modernity and who don't share its hierarchy of values. They are not driven primarily by economic considerations. They have never put their faith in the power of soft power, never believed that world opinion (no matter how outraged) could prevent successful conquest by a determined military. They are undeterred by their McDonald's. They still believe in the old-fashioned verities of hard power, at home and abroad. And if they are not met by a sufficient hard-power response, they will prove that, yes, there is such a thing as a military solution.

This lesson won't be lost on others who wield increasing power in other parts of the world and who, like Vladimir Putin's autocratic Russia and Abu Bakr al-Baghdadi's fanatical Islamic State, have grievances of their own. In the 1930s, when things began to go bad, they went very bad very quickly. Japan's invasion of Manchuria in 1931 exposed the hollow shell that was the League of Nations—a lesson acted upon by Hitler and Mussolini in the four years that followed. Then Germany's military successes in Europe emboldened Japan to make its move in East Asia on the not unreasonable assumption that Britain and the U.S. would be too distracted and overstretched to respond. The successive assaults of the illiberal aggressors, and the successive failures of the liberal powers, thus led to a cascade of disasters.

The wise men and women of our own time insist that this history is irrelevant. They tell us, when they are not announcing America's irrevocable decline, that our adversaries are too weak to pose a real threat, even as they pile victory upon victory. Russia is a declining power, they argue. But then, Russia has been declining for 400 years. Can declining powers not wreak havoc? Does it help us to know that, in retrospect, Japan lacked the wealth and power to win the war it started in 1941?

Let us hope that those who urge calm are right, but it is hard to avoid the impression that we have already had our 1931. As we head deeper into our version of the 1930s, we may be quite shocked, just as our forebears were, at how quickly things fall apart.

This piece was originally published by Wall Street Journal.