Registering Illegal StatusStarting Friday, a federal judge has ruled that immigrants who are in the U.S. illegally must self-register themselves with the federal government. Currently, federal immigration law requires people who are not American citizens to register, but that hasn't been strictly enforced until the recent ruling.A federal judge says the Trump administration can move forward on the rule, which also requires migrants to carry documentation. The Department of Homeland Security says people must self-report, provide their fingerprints and address, and register anyone else under the age of 14, or face fines and prosecution. Immigration groups argue the ruling helps the Trump administration carry out its goal of mass deportations.Stopping the End of Humanitarian ParoleA judge in Massachusetts says she will rule to keep temporary protected status for more than half a million people, arguing the Trump administration cannot cut their stay in the U.S. short without reason. The Trump administration revoked legal status for people from Cuba, Haiti, Nicaragua and Venezuela. There is a similar effort to protect people under the program from Afghanistan and Ukraine as well. Deportations were scheduled to start later this month.However, those who are part of the program received two-year permits to live and work in the U.S., crossed the border legally, paid their own way to get to the U.S., and have financial sponsors who are permanent U.S. residents. The district court's ruling will likely be appealed.New Cases from the Alien Enemies ActThere are also new challenges to the Trump administration deporting people under the Alien Enemies Act, despite a recent ruling on a similar case this week. On Monday, the Supreme Court ruled that challenges have to be brought by the people who believe they're being detained improperly. The cases have to be filed where those people are being held. The court affirmed the Trump administration has to give detainees a chance to challenge their removal, leading to new cases in New York and Texas, where judges temporarily stopped the White House from deporting Venezuelans held in those jurisdictions. Judges could expand the rulings nationwide as the cases play out, something a court in Texas may consider during a hearing on Friday.Defining "Effectuate"The Supreme Court ruled on another immigration case overnight Thursday, involving a Maryland man who the Trump administration admits they mistakenly deported to El Salvador. Kilmar Abrego Garcia was going through the asylum process, but the White House, making unsubstantiated claims, said he was part of a gang. The administration sent him to a prison in El Salvador and has refused to bring him back. The Supreme Court sided with a lower court ruling that the government should "facilitate" Abrego Garcia's release and handle it properly, and share what they plan to do to get him back. But the Supreme Court Justices asked the lower court judge to clarify what she meant in the decision to "effectuate" his return, which may interfere with the president's power to conduct foreign affairs as he chooses.