A proposed immigrant detention center in the Everglades dubbed "Alligator Alcatraz" is drawing criticism for its potential effect on the ecosystem.

Florida this week started construction on a migrant detention facility the state is billing as “efficient” and “low-cost” – because Mother Nature will provide much of the security.

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.