Federal agencies have had directive's for energy conservation off and on going back at least 40 years. I do not think that any of them were legislated- but rather mandated by executive action. Certainly, It never hurts to be reminded. I am obviously waffling a bit on this. But, given the attitude of the trump-bunch, legislation is warranted. I fear that a lot of things that were done by administrations more focused on doing what is right instead of what is profitable will require legislative corrective actions. To quote our 'leader', SAD!