Donald Trump’s repeated calls to “build a wall” and his threat to cut off development assistance to Guatemala, Honduras and El Salvador overlook the complex causes of Central American migration to the United States and the ways in which the U.S. is implicated in migrants’ decision to leave their homes. In this talk, Laura Macdonald examines the causes of migration and the recent caravans, and the role of the Mexican government. She calls for a regional response, including from Canada, to the overlapping environmental, economic, and security crises faced by the region.