Since the Patriot Act, executive orders, which can become the rule of the day, enacted and abolished like playing a game of hot potato. Drone a bomb here, fire a missile there, send troops to Somalia, build a monument or a wall here, now tear it down - all by executive order. 

Besides the disturbing loss of a balance of power between the three branches of government, and the obscene political shenanigans, the real issue with PMNM is conserving resources for future generations, or maximizing short term profits. Both valid points for discussion.

Unfortunately, human history has shown numerous times that humans have a habit of extracting a resource right up to extinction of the resource. A grand Pacific example is defoliating Easter Island.
Trump and Co. may be draining the national swamp to strip mine it. I guessing.