Yes, it's true - the very show in which WCSH 6 denied the existence of global warming and allowed a man to claim that Earth's gravity has cycles that affect the climate also included an interview by Rob Caldwell with Senator John McCain.
Caldwell's interview (watch it below) is getting attention all over the blogosphere, mainly because McCain was such a horrendous liar and was unable to compently deliver non-answers to Caldwell's relatively simple questions. And sure, Caldwell did let McCain hang himself, but Caldwell is the same reporter who just minutes later did not ask a man calling himself a scientist to explain this statement: "temperatures rise with the gravitational cycles I've been talking about."
Caldwell and McCain
Caldwell on global warming