Extraordinary address comes ahead of November midterm elections, with Republicans at risk of losing their majorities in Congress WASHINGTON—President Trump delivered an extraordinary prime-time address in which he alleged that the U.S. election system had been compromised, ramping up his efforts to sow doubts about his 2020 election loss, raise skepticism about the coming midterms and pressure lawmakers into passing sweeping voter-ID legislation. Speaking in the East Room on Thursday night, Trump said he was declassifying a trove of intelligence documents that he argued showed efforts by the Chinese government to interfere in or influence the 2020 U.S. election. He...