Mr. Trump’s core supporters say they’re not worried. Standing in the sweltering heat outside East Carolina University in Greenville, N.C., last month as he waited for entry into a rally led by the president, Trey Bagley, 25, readily acknowledged climate science. But Mr. Bagley, a sergeant in the Marine Corps Reserves wearing a “Trump 2020, Make Liberals Cry Again” shirt said that did not make him a Democrat.
“I completely agree that we’re offending the climate,” Mr. Bagley said. “But the solutions that are being introduced to fix it are going to drive us back into the Dark Ages.”