Former Vice President Joe Biden kicked off his "No Malarkey" bus tour on Saturday by warning a crowd in Iowa that President Trump would "change the character" of the U.S. if he were to stay in the White House for eight years. "We can overcome four years of Donald Trump, but eight years will literally, literally begin to change the character of this nation, and we cannot let that happen," Biden said, echoing a theme of his 2020 presidential campaign. "We cannot let that happen." Biden's eight-day bus tour will take him to 18 counties in Iowa as part of...