The plaintiffs are seeking a court order to halt further transfers to Guantánamo and to return any detainees currently held there to immigration facilities within the United States. They also seek a declaration that the government’s actions violate U.S. immigration law, the APA, and the Constitution.

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

The new case, which for now is asking for a court to block the transfer of 10 men to the offshore base, is the first to directly challenge the policy.

By Ted Hesson WASHINGTON (Reuters) -A U.S. civil rights group on Saturday sued to block the Trump administration from potentially transferring 10 migrants from the U.S. to a naval base in Guantanamo Bay,

Attorneys filed a lawsuit against the Trump administration Saturday to halt the transfer of 10 migrants detained in the U.S. to Guantánamo Bay Naval Base in Cuba. This marks their second legal challenge in under a month against plans to use the facility for large-scale immigrant detention before deportation.