Against the half-trillion in benefits you can weigh the global warming impact – or non-impact. Model runs based on mainstream, consensus climate models show the Trump proposal would impact the global climate by 3/1000th of one degree Celsius by 2100. You can round that to zero,” Kerpen wrote e concluded: “President Trump is absolutely right to stand up to the shrieks of protest from the environmental groups and the media and to let Americans buy the cars and trucks we want.