The American Civil Liberties Union (ACLU), the Center for Constitutional Rights, the International Refugee Assistance Project (IRAP), and the ACLU of the District of Columbia filed a lawsuit on behalf of migrants who face the risk of being transferred to Guantánamo Bay.

The lawsuit says there is no legitimate reason to send migrants to Guantánamo because the U.S. has ample detention facility.

Civil rights attorneys sued the Trump administration Saturday to prevent it from transferring 10 migrants detained in the U.S. to Guantanamo Bay, Cuba, their second legal challenge in less than a month over plans for holding up to 30,

The base had been cleared of migrants since Thursday, after the government sent 177 to Venezuela and one back to the United States.