For the most part, John McCain is an orthodox conservative Reublican and his “maverick” reputation is mostly a myth. It was shocking to see Trump attack McCain’s war record in 2016 with little pushback. 

McCain is speaking about Trump’s bizarre claims about Obama wiretapping Trump. From the Chicago Tribune:

McCain said Trump could “clear this up in a minute” if he were to call “the director of the CIA, director of national intelligence and say, ‘OK, what happened?'”

The president has an obligation to provide evidence that Obama broke the law or retract his claim, the Arizona Republican said.