The Trump administration's zero tolerance policy has resulted in the separation of more than 2,300 migrant children from their parents at the border in recent weeks.
The ACLU warns that a new rule allowing the government to look into potential guardians' immigration status will leave the children with nowhere to go but detention facilities.
Customs and Border Protection agents are running out of space to shelter the hundreds of migrant children who have been separated from their parents at the United States border as part of the Trump administration's "zero tolerance" policy.