ALEXANDRIA, Va. (AP) - A U.S. citizen accused of joining al-Qaida and plotting to assassinate President Bush said in a videotaped confession that he was motivated by hatred of American support for Israel. Ahmed Omar Abu Ali also said on the tape, played in court for the first time Tuesday, that a top al-Qaida operative in Saudi Arabia "made it clear I became one of them and that I could speak in the name of al-Qaida." The 13-minute confession was videotaped in 2003 by authorities in Saudi Arabia, where Abu Ali attended college. His attorneys want the confession thrown out....