Likely Republican presidential candidate Rick Santorum argued over the weekend that America should "clearly" do nothing to stop climate change.

"Is the climate warming? Clearly, over the past 15 or 20 years, the answer is yes," Santorum told CNN host Michael Smerconish on Sunday. "The question is, is man having a significant impact on that, number one. And number two, and this is even more important than the first, is there really anything we can do about it?"

"Is there anything the United States can do about it? Clearly, no," he continued. "Everything that is being considered by the United States will have almost -- well, not almost, but zero impact on it given what's going on in the rest of the world."

"So, is your answer, do nothing?" Smerconish wondered.

"If it has no impact, of course, do nothing!" Santorum exclaimed. "Why would you do something with people admitting that even if you do something, it won't make a difference?"