HARRISBURG (AP) – U.S. Sen. Bob Casey and 10 PA U.S. House members are asking the U.S. postmaster general to immediately return sorting machines that were removed, while union officials say the machines’ removal has contributed to a slowdown in mail delivery. A letter to Postmaster General Louis DeJoy was signed by Casey, a Democrat, all nine PA Democrats in the U.S. House, and one of nine PA Republicans, Congressman Brian Fitzpatrick. They say they’ve heard from people across Pennsylvania who are concerned about delayed mail delivery. They say at least 30 letter-sorting machines have been removed from PA mail facilities.