Florida Democrats inspected the "Alligator Alcatraz" immigrant detention center, criticizing the $450 million site as environmental groups file lawsuit over ecological concerns.

The mayor's request comes as state and federal lawmakers prepare to tour the remote facility this weekend, amid growing scrutiny over its conditions.

Videos from the opening tour of Donald Trump's new detention centre in Florida reveal flooding near electrics, raising concerns that the eight-day construction compromised its readiness, before detainees arrived at the facility.

Florida's Miccosukee tribe challenges new Everglades detention facility over environmental and safety concerns, as Trump tours the 5,000-person "Alligator Alcatraz."