The federal bureaucracy is dictating[1] a lot of minutia on the square centimeter level that should be getting done at the square kilometer level. We could probably give up on a lot of detailed stuff without any negative effect.

Like for example the amount of water a toilet flush can has been federally regulated since the 90s. Sure, that might be important if you need to keep some schmucks in the desert from bickering over aquifer depletion and whatnot. But the majority of jurisdictions in the east "we take surface water and give it back to the same watershed" jurisdictions who can use all the water they want and only impact the required size of the hardware at the treatment plant. So why are we even regulating this? And any issue you look into there's a plethora of stuff like that. Theoretically it's all justifiable in abstract but that's like littering, it doesn't scale.

[1] via "states shall adopt in order to qualify for this grant" type rules which the states then roll downhill