Deep in the hazardous and ecologically fragile Everglades, hundreds of migrants are confined in cages in a makeshift tent detention facility Florida’s Republican governor calls “safe and secure” and Democratic lawmakers call “inhumane.

The state-arranged tour came after some Democrats were blocked earlier from viewing the 3,000-bed detention center.

Members of Congress and Florida state lawmakers from both parties visited the facility for the first time since it opened on Saturday.