Ahead of Donald Trump’s announcement on Thursday afternoon that the U.S. is backing out of the Paris climate agreement, one congressman from Michigan offered up his optimistic outlook on global warming to his constituents.

“I believe there’s been climate change since the beginning of time,” Rep. Tim Walberg told a town hall gathering in Coldwater, Mich., last week. “Do I think man has some impact? Yeah, of course. Can man change the entire universe? No.”