With Florida's so-called Alligator Alcatraz now open, another migrant detention facility roughly 400 miles north of the original is already planned in the Everglades.

A state-run detention facility for migrants has opened in the Florida Everglades. Alligator Alcatraz - that is the official name - was assembled in eight days and opened on July 1. President Donald Trump visited the remote site on opening day, built at an old runway near the Miami-Dade and Collier county line.

The first group of immigrants has arrived at the center in the Florida Everglades. It was built in eight days and could eventually hold 3,000 people. (AP Video: Rebecca Blackwell)