ASSOCIATED PRESS                                 Cindy McCain, wife of former Arizona Sen. John McCain, waved to the crowd, Jan. 13, after being acknowledged by Arizona Republican Gov. Doug Ducey during his State of the State address on the opening day of the legislative session at the Capitol in Phoenix. Democrat Joe Biden said today 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.