U.S. Sen. Jeff Merkley said that he talked to three boys who also confirmed reports that employees told teenagers they would not be reunited with family if they misbehaved.
"We should be having an expedited process to have kids placed with sponsors," Merkley told The Associated Press. "The principle is you don't keep kids locked up."
Department of Health and Human Services spokesman Mark Weber said Wednesday that the release of children can be delayed "if a child presents with serious behavior incidents or impulsivity."
"The behavior is evaluated and informs the release recommendations," Weber said. He clarified the employees should not be discussing with the children the factors used to determine their release. "Staff will be retrained on this topic to ensure compliance."
The senator says it is the largest and least regulated of the facilities where the government holds children who cross the Mexican border.
The agency says children spend 58 days on average there. When the news media visited in June, officials said the average stay was 25 days.
Merkley has introduced legislation to shut down unlicensed facilities.
The Florida Department of Children and Families has said in an emailed statement that the facility is federal and the state child welfare agency "does not have any jurisdiction or involvement with children placed there."
In December, the government simultaneously announced the closure of an unlicensed detention camp in Tornillo, Texas, and the expansion of the Homestead facility from 1,350 to 2,350 beds.