Congress did not overstep its bounds when it expanded the Federal Kidnapping Act to cover some abductions that do not cross state lines, a judge ruled.In a written opinion this week, U.S. District Judge Harry D. Leinenweber declined to throw out an indictment against a man accused of kidnapping and assaulting three women who had advertised their sexual services on such websites as Backpage and Craigslist.Leinenweber rejected …