An insidious form of climate denial is festering in the Republican Party

When Rep. Scott Perry (R-PA) questioned US climate envoy John Kerry at an oversight hearing in July — a month that became the hottest ever recorded — he sidestepped that the country was in the grip of repeated heat waves, fires, and a looming hurricane season. Over a six-minute interrogation, the House Freedom Caucus chair claimed Kerry wanted to charge taxpayers a “quadrillion dollars to fix a problem that doesn’t exist” and accused him, along with thousands of scientists and the 195 governments signed onto the Paris climate accord, of “grifting.”

Kerry...