The 40 men were transported to Louisiana as the detention operation faces a number of logistical and legal hurdles.

A federal judge in Washington ruled against plaintiffs who challenged the Trump administration’s ability to transfer immigrants to the U.S. military base in Cuba, known as Guantánamo Bay.

A federal judge on Friday declined to grant temporary injunctive relief to plaintiffs in two lawsuits challenging the Trump administration’s efforts to detain migrants at Guantánamo Bay. U.S. District Judge Carl Nichols said the plaintiffs — in one lawsuit,