Brooklyn-born Rabbi Meir Kahane, the anti-Arab militant who renounced his U.S. citizenship to run for Israel's Parliament, said he wants to be an American citizen again. Kahane said he plans to fly to the United States today for a fund-raising tour, but U.S. officials said his passport is no longer valid. A U.S. Embassy spokesman in Tel Aviv said Kahane formally renounced his citizenship Sept. 16, and the State Department later approved the loss of nationality. On Oct. 18, Kahane sought a reversal, but the spokesman said an appeal is the only recourse. In the interim, Kahane's Kach party was barred from the election on the grounds that it is racist.