Environmental groups sued to stop construction of "Alligator Alcatraz," a migrant site in the Florida Everglades.

An immigration detention facility located at an isolated Everglades airfield surrounded by mosquito-, python- and alligator-filled swamplands is just days away from being operational.

Florida Attorney General James Uthmeier is getting pushback from environmentalists who say they were "blindsided" by his proposal to build a temporary migrant detention center in the heart of the Everglades that he has dubbed "Alligator Alcatraz.