The tug-of-war over America’s public lands between those who would protect them for future generations and those who would exploit them for immediate commercial gain has a long history. The two Roosevelts, Richard Nixon, Jimmy Carter and Bill Clinton were mostly sympathetic to the cause of conservation, Ronald Reagan and the second George Bush decidedly less so. But for sheer hostility to environmental values, Donald Trump has no equal. … In the shadow of these big ticket items, Mr. Trump has presided over several less visible travesties. We offer three. One is his push to open the Tongass National Forest in Alaska to logging.  …The Washington Post reported on Tuesday that the president has ordered Agriculture Secretary Sonny Perdue, who oversees the Forest Service, to draw up a plan that would wipe out protections for all of the 9.5 million acres of roadless forest protected nearly 20 years ago.