By David Morgan WASHINGTON (Reuters) -A bipartisan group of U.S. senators introduced two bills on Wednesday to reform election laws, seeking to block a repeat of then-President Donald Trump’s failed attempt to overturn his 2020 election loss to Democratic President Joe Biden. The legislation, among other things, would make clear that the vice president has only a ceremonial role in certifying election results, after a mob of Trump supporters on Jan. 6, 2021, stormed the U.S. Capitol in a bid to force then-Vice President Mike Pence to overturn the election result. The action came amid growing e…