FILE – In this Oct. 16, 2017, file photo Sen. John McCain, R-Ariz., receives the Liberty Medal from Chair of the National Constitution Center’s Board of Trustees, former Vice President Joe Biden, in Philadelphia. Cindy McCain is going to bat for Biden, lending her voice to a video set to air on Tuesday, Aug. 18, 2020 during the Democratic National Convention programming focused on Bidens close friendship with her late husband, Sen. John McCain. (AP Photo/Matt Rourke, File)
Democrat Joe Biden said Tuesday that Cindy McCain plans to endorse him for president, a stunning rebuke of President Donald Trump by the widow of the GOP’s 2008 nominee.