Legal experts say it is the first time a U.S. government has claimed that unclassified information is a state secret.

President Donald Trump's administration has acknowledged mistakenly deporting a Maryland man with protected legal status to a notorious El Salvador prison.

The Trump administration is remaining firm in its stance to arrest a man following a report from The Atlantic that the federal attorneys said that there was an “administrative error."

U.S. immigration officials admit mistakenly deporting a Maryland man to El Salvador, sparking controversy and criticism from advocates.

Top ICE official calls removal of Kilmar Abrego Garcia on deportation flight that sent him to a supermax prison in El Salvador an "administrative error."

Two Venezuelan women, who the Trump administration tried to send to El Salvador, spoke to NBC News senior homeland security correspondent Julia Ainsley about what they experienced and witnessed.

Maiker Espinoza Escalona is being accused of being a member of the Venezuelan gang Tren de Aragua by the Trump administration, an accusation his family denies.

The Trump administration says it has deported 17 more “violent criminals” from the Tren de Aragua and MS-13 gangs to El Salvador, as it doubles down on a policy of removing people from the U.S. to third countries despite criticism over lack of transparency and human rights protections.