Bulletin Today | Politics | Your LifeBy Pauline Jelinek, The Associated Press WASHINGTON (AP) — The beleaguered U.S. Postal Service backed down from its cost-saving plan to eliminate Saturday mail delivery, acknowledging that Congress barred a move that supporters said was essential to addressing the agency’s dire financial condition. Despite the retreat, the governing board said Wednesday that it’s not possible for the Postal Service to meet its goals for reduced spending without altering the delivery schedule. Delaying “responsible changes,” the board said, only makes it …