WASHINGTON - A U.S. customs inspector praised for keeping the 20th hijacker in the 9/11 plot from getting into the country told Congress yesterday that the "hostile" Saudi gave him the creeps and vowed, "I'll be back." Jose Melendez-Perez told the 9/11 Commission, the panel probing the attacks on America, that he was spooked enough by the man identified only as "Al-Qahtani" to put him on a plane out of Orlando after he arrived in the U.S. from London and Dubai, United Arab Emirates, with a one-way ticket and $2,800 in cash. Al-Qahtani was dressed head-to-toe in black when he...