The U.S. Secretary of State thanked El Salvadorian President Nayib Bukele for taking in more than 200 alleged gang members in its 40,000-inmate prison for the "low cost" of $6 million.

Temperatures inside the cells can soar to a sweltering 95 degrees during the day, with no additional ventilation to provide relief.

The administration won’t identify those moved — or say whether the Alien Enemies Act, which briefly sped up some deportations, played any role.