Panama and Costa Rica are chokepoints on the migrant trail followed by people from other continents seeking easier U.S. entry through our porous border with Mexico. In December 2018, the Center for Immigration Studies dispatched Senior National Security Fellow Todd Bensman to Panama and Costa Rica to investigate President Donald Trump’s widely ridiculed assertions that suspected terrorists had been apprehended among Middle East migrants through Latin America. Panama is a geographic chokepoint, or bottleneck, through which migrants from countries of the Middle East, who are moving out of South America, must push on their way to the U.S. border. The...