Some of the hundreds of Colombians deported in the first weeks of Trump’s presidency said they had only seen the United States from the inside of detention centers.

Trump recently suspended asylum claims in the U.S. and has taken other steps that could make winning existing cases more difficult.

A coalition of immigrant advocates, including the American Civil Liberties Union, sued the Trump administration in federal court in Washington on Monday, arguing that President Trump’s order shutting the United States’ southern border to asylum seekers was unlawful.

Among his earliest actions in office, President Donald Trump discontinued use of the CBP One app, which had been developed by Customs and Border Patrol and rolled out under the Biden administration to facilitate asylum appointments at the southern border.

The ACLU and a coalition of immigrant rights advocates filed a lawsuit Monday to stop the federal government from implementing the Trump administration’s new asylum policies, which they argue attempt to wipe away long-standing laws and protections “by fiat.

President Donald Trump has signed a flurry of executive orders tied to illegal immigration and refugee admissions since taking office on Jan. 20.