Alabama and Georgia will try to salvage their laws targeting illegal immigrants in arguments before a federal court that already said there’s a “substantial likelihood” some parts will be thrown out. A three-judge panel set to hear cases today in Atlanta temporarily blocked Alabama from requiring illegal immigrants to carry registration papers and forcing schools to determine the legal status of students as they enroll. It refused to block other provisions. The Justice Department and nongovernment advocacy groups are likely to win parts of their challenges to the statutes because the federal government exclusively controls immigration, a different three-judge panel of the court said earlier. Today’s oral arguments on three cases, two from Alabama and one from Georgia, will take place separately in one session for each state.