The Trump administration said it plans to rearrest Mahmoud Khalil, with the goal of deporting the Columbia University activist of Palestinian descent to Algeria — a move that Khalil’s lawyers panned Thursday as illegal. Khalil was being held in Louisiana until a federal judge ordered him released last June. But last week, an appeals court dealt a major blow to Khalil’s legal challenge to his detention, reversing the lower court order, 2-1, and paving the way for him to be arrested again. “It looks like he’ll go to Algeria. That’s what the thought is right now,” Tricia McLaughlin, a top...