Sen. John McCainJohn Sidney McCainThe Memo: Trump’s media game puts press on back foot Meghan McCain shreds Giuliani for calling Biden a 'mentally deficient idiot' Mueller warns of Russian midterm attack, while Trump attacks Mueller MORE (Ariz.) cast doubt Tuesday on the Democratic agenda to pass a climate change bill, taking a mild swipe at rival Barack ObamaBarack Hussein ObamaObama shares summer reading list ‘Three Californias’ plan would give Dems more seats Loyalty to Donald Trump is new normal for the Republican Party 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