Samsung has failed to win a presidential veto overturning a looming import ban on several of its older mobile devices, reports Bloomberg. The ban is based on a verdict in a U.S. International Trade Commission case in which the company was ruled to have infringed upon patents held by Apple.“After carefully weighing policy considerations, including the impact on consumers and competition, advice from agencies, and information from interested parties, I have decided to allow” the import ban to proceed, Obama’s designee, U.S. Trade Representative Michael Froman, said in a stat