A federal judge blocked the Trump administration from removing any migrants under the Alien Enemies Act late Saturday—but the White House said Sunday that hundreds of alleged gang members had still been sent to El Salvador.

U.S. District Judge James E. Boasberg issued an order Saturday temporarily blocking the deportations, but lawyers told him there were already two planes with immigrants in the air — one headed for

Republican Sen. Mike Rounds (S.D.) appeared on CNN Sunday, where he spoke about President Trump’s decision to invoke a 1798 immigration law and a federal judge’s attempt to block it. On Saturday,

The Trump administration has sent hundreds of Venezuelans accused of being gang members to a prison in El Salvador -- the first of whom arrived Sunday, pushing the limits of U.S. immigration law by carrying out the deportations seemingly after a federal judge ordered that the flights not proceed.

The Trump administration has deported alleged members of a Venezuelan gang from the U.S. despite a court order forbidding it from doing so, saying in an extraordinary statement that a judge did not have the authority to block its actions.

The White House is denying that it violated a judge’s order Saturday to halt the deportations of Venezuelan gang members to El Salvador, which, if it did occur, would take legal showdowns over the administration’s claims of vast presidential power closer to the edge of a constitutional crisis.

The Trump administration has deported hundreds of Venezuelan migrants from the United States to El Salvador whom it alleges are gang members despite a court order preventing their expulsion.