Nov. 4 (UPI) -- An Iowa judge on Sunday ruled that the state can challenge thousands of ballots to be potentially cast in Tuesday's presidential election by residents who had once identified themselves noncitizens, a move that voting advocates see as an attempt to disenfranchise naturalized citizens. On Oct. 22, Iowa Secretary of State Paul Pate had sent a letter to county commissioners identifying 2,176 registrants whose ballots in the general election are to be challenged because they had, at