Earlier this month, President Donald Trump used the Alien Enemies Act to deport 238 Venezuelans from the United States—sending them not to their home country, but to a prison in El Salvador notorious for its harsh conditions.

Homeland Security Secretary Kristi Noem on Wednesday visited the Salvadoran mega-prison where the U.S. has sent hundreds of Venezuelans, accusing them of ties to gangs. Noem’s three-day trip around the Americas began at El Salvador’s Terrorism Confinement Center,

First-hand accounts, along with court documents and flight tracking data, reveal the administration’s calculated race to send alleged gang members to El Salvador before a court could halt their plans.