Washington — President Joe Biden is moving to ban new offshore oil and gas drilling in most U.S. coastal waters, a last-minute effort to block possible action by the incoming Trump administration to expand offshore drilling. Biden, whose term expires in two weeks, said he is using authority under the federal Outer Continental Shelf Lands Act to protect offshore areas along the East and West coasts, the eastern Gulf of Mexico and portions of Alaska’s Northern Bering Sea from future oil and natural gas leasing. “My decision reflects what coastal communities, businesses and beachgoers have known for a long time: