Last week, President Trump announced that he would stop sending financial aid to Guatemala, Honduras, and El Salvador, the countries of origin of many of the migrants attempting to cross the U.S.-Mexico border. Trump’s announcement contradicts accepted wisdom that foreign aid decreases migration, and comes as Trump is threatening to close the southern border as a matter of national security. Jonathan Blitzer, who recently reported on migration from Guatemala, joins Dorothy Wickenden to discuss Trump’s immigration policies and how climate change is giving his Administration even more to worry about.