Lebanon's prime minister-designate has postponed offering his resignation in a move the opposition says is aimed at delaying parliamentary elections set for May. Omar Karami said Tuesday he would resign. But he now says he will consult with his pro-Syrian allies this week before making the move. Opposition officials are calling the consultations a delaying tactic because parliamentary elections cannot be held until Lebanon has a prime minister who forms a government, which Mr. Karami failed to do. Meanwhile, some 3,000 people demonstrated outside the U.S. embassy in Beirut, to call on the United States to stay out of Lebanese politics. And on Tuesday, Syria pledged to the United Nations to withdraw all of its troops from Lebanon before the scheduled May elections.