An Italian passport holder was already preparing to leave the U.S. All three ended up at Alligator Alcatraz, a vast compound of tents and trailers built to hold up to 3,000 migrants deep in the Florida Everglades.

The group has received reports this week that detainees from the island have been sent to the Florida facility and allege "rights violations and dehumanizing treatment" there.

Environmental groups and locals including the Miccosukee Tribe of Indians of Florida say the center is a big problem.