For decades, the U.S. has been the single biggest source of remittances worldwide. A remittance is a transfer of money, typically from an immigrant to their family in their country of origin. But we are in the middle of a big, loud and very public immigration crackdown on those who are here without legal status. And that crackdown is disrupting the global remittance market.

People who have come to the U.S. from a handful of countries — especially some Central American countries — have been sending more money back to their countries of origin. And it's a bit of a puzzle because … you might think the opposite would be the case.

As immigration plummets, we try to figure out why remittances are surging in some countries, and not others. And we learn why a surge in money sent home inspires jo

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