President Trump says he will use a detention center at Guantánamo Bay to hold tens of thousands of criminal immigrants in the U.S. illegally.

Human rights groups have accused U.S. authorities of using Guantánamo Bay for decades to detain migrants fleeing Haiti, Cuba and other Caribbean nations.

Donald Trump has ordered his administration to prepare Guantánamo Bay Naval Base to house up to 30,000 “criminal aliens,” significantly expanding the government’s current detention capacity. The portion of the facility the administration plans to use currently only has capacity for 150 migrants.