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

Immigrant advocates said the move creates a whole new form of detention outside the scope of the federal government.

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. “Alligator Alcatraz,