For a decade, the United States has exported its gang problem, sending Central American-born criminals back to their homelands -- without warning local governments. The result has been an explosive rise of vicious, transnational gangs that now threaten the stability of the region's fragile democracies. As Washington fiddles, the gangs are growing, spreading north into Mexico and back to the United States.
Migration lies at the center of global problems today. Rich countries are trying to attract skilled immigrants and keep unskilled ones out; poor countries are trying to keep skilled labor at home. Both sides are doomed to fail. Governments must stop trying to curtail migration and start managing it to seek benefits for all.