evidence: Mitch McConnell blocks election security legislation Hours after former special counsel Robert Mueller testified Wednesday that Russians are still meddling in the U.S. political system, Senate Majority Leader Mitch McConnell blocked the advancement of legislation to secure the nation's election system. Republican Sen. Cindy Hyde-Smith also blocked a set of bills on election security Wednesday. In blocking the legislation pushed by Senate Democrats to provide more funding for election security, McConnell declared the effort partisan and insisted the Trump administration has already done much to secure the nation's elections.