The Trump administration is arguing in federal court that it was justified in sending the Venezuelans to El Salvador, while activists say officials have sent them to a prison rife with human rights abuses.

WASHINGTON (Reuters) - U.S. Homeland Security Secretary Kristi Noem on Wednesday is expected to visit a mega-prison in El Salvador holding Venezuelans deported by the U.S. as civil rights groups challenge the removals in a high-profile court battle.

The prison in El Salvador where the Trump administration has sent alleged gang members for detention has a reputation for human rights violations and corruption, with civil rights groups challenging the removals calling it “one of the worst prisons in the world.