In two days of testimony to Congress, Homeland Security Secretary John F. Kelly said he doubts his ability to oust some 250,000 immigrants from Central American countries who have been in the U.S. for nearly two decades on a temporary humanitarian relief program.

He also signaled that he would keep protecting 780,000 Dreamers from deportation and hoped Congress would grant them permanent status.

“You’ve got to solve this problem,” Mr. Kelly told the House Homeland Security Committee when members prodded him not to deport Dreamers.

He said he would not deport Dreamers but warned that the policy could change when someone else takes over his job, making the only solution congressional action. He said there is clear bipartisan support for some form of permanent legalization and urged lawmakers to take the opportunity that the Trump administration is giving.