Sen. John McCainJohn McCainA Cabinet position for Petraeus; disciplinary actions for Broadwell after affair Meet Trump’s ‘mad dog’ for the Pentagon Wrestling mogul McMahon could slam her way into Trump administration MORE (Ariz.) cast doubt Tuesday on the Democratic agenda to pass a climate change bill, taking a mild swipe at rival Barack ObamaBarack ObamaFor Trump, foreign policy should begin and end with China Harvard spat between Clinton, Trump camps proves Dems can't accept Trump's improving Wrestling mogul McMahon could slam her way into Trump administration MORE's administration for failing to lead on the issue.

Asked whether the Senate could pass climate change and health care reform this fall, McCain said the White House still hasn't produced a bill and suggested Obama still has yet to reach out to Republicans on the issue.

"It depends on whether the administration has a proposal. That's generally the way we work, but obviously that's not been the case here," McCain said. "It also depends on whether there's a tangible desire for bipartisanship and whether the president decides to lead. I think that some of us have a legitimate desire to say, 'Well, what is your proposal?' to the president."

--J. Taylor Rushing