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

While it's a mostly idle airfield, the Miami-Dade facility seized by Florida has a runway longer than some at MIA.

The little-used airstrip in the Everglades that the state is using to build a detention center for immigrants, dubbed "Alligator Alcatraz," is part of a storied history involving Palm Beach County at ...