evidence: More than 200 Republicans who worked for both Bush presidents, the late Sen. John McCain and Sen. Mitt Romney declared their endorsement of Vice President Kamala Harris’ presidential campaign in an open letter released Monday. [...] A similar group of anti-Trump Republicans, including several hundred former aides to George W. Bush and McCain, endorsed Biden’s 2020 presidential election campaign. [...] McCain said in 2016 that he couldn’t back Trump or Democrat Hillary Clinton, citing Trump’s inflammatory comments about women. His wife, Cindy McCain, later endorsed Biden in the 2020 election.