"We're on the same team, but I can tell you what is resented amongst Republicans," McCain said. "And that is that Senator Cruz and Senator Lee are raising money for an organization that is running ads attacking Republican senators."
In the government shutdown's aftermath, Cruz told National Review's Robert Costa that he'd like to see Republicans who opposed his effort to shut down the government in order to defund the Affordable Care Act held accountable at the ballot box. Cruz also reportedly told colleagues in a closed-door meeting that he wouldn't renounce the attacks on Republicans coming from the Senate Conservatives Fund, an organization that endorsed him.
Listen to McCain's comments courtesy of KFYI, at around the 16:00 mark: