Tuesday began with news that the Trump Administration had imposed a comprehensive gag order on employees of the Environmental Protection Agency. According to a leaked memo, “no press releases,” “no blog messages,” and “no social media will be going out,” and “no new content can be placed on any website” until further notice—perhaps an attempt to camouflage the other big E.P.A. announcement, which was that the agency’s grants and contracts had been temporarily frozen, effectively halting its work. Then, at nine o’clock, the President had breakfast with a group of beaming auto executives. Trump told them that he was “to a large extent an environmentalist,” but apparently his long participation in that movement had persuaded him that “environmentalism is out of control.” The last time Detroit’s C.E.O.s came to the White House, in 2011, President Obama got them to agree, grudgingly, to increase average fuel economy to 54.5 miles per gallon, a pledge they now hope to recant. The day went on. Just before noon—surrounded by his increasingly familiar cast of white guys in suits—Trump signed an executive order expediting approvals for the Keystone and Dakota Access pipelines, thus overturning perhaps the two biggest environmental victories of the Obama years, both of which the advocacy organization I helped found, 350.org, fought for vigorously.