Several immigrant detainees described high tension and anxiety at the remote, hastily constructed facility over a lack of information, recreation and access to medication.

How many inmates at Florida's Alligator Alcatraz? How many people in a cell? Where do they eat? Who works there? Is there air conditioning? Showers?

The filing Monday of a motion to intervene in the case initially brought by environmental groups signals a new level of opposition by the tribe, which is also a major political donor in the state.