All such arguments about the constitution and federal power are just a waste of time. The constitution is so riddled with flaws that there's little point in attempting to save the good parts. We absolutely should throw out a large proportion of the "rules" in the constitution. The idea that some policies are okay for state governments to do but not okay for the federal government to do also makes no real sense. It's just an arbitrary jurisdictional distraction from the substantive content of policies. Talking about "breaking the rules" in this context is like there's a basketball game where fans, coaches, and players are all kicking each other in the nuts and you're worried about calling double dribble.
> The idea that some policies are okay for state governments to do but not okay for the federal government to do also makes no real sense.
There are many issues on which not everyone agrees what should be done. If the federal government does them, the same solution is forced on everyone even if a large plurality of people would prefer something else and those people constitute the majority of various states, so it makes more sense to let each state decide for themselves. There is nothing stopping them from all doing the same thing if there was consensus.
And when there isn't consensus, you get to see how each of the alternatives turn out when different states do different things:
https://en.wikipedia.org/wiki/Laboratories_of_democracy
But if the federal government is even allowed to do them then whichever faction has the federal majority imposes their will on everyone else and prevents that from happening.
> Talking about "breaking the rules" in this context
The post I responded to was the one that brought up "breaking the rules". My point is that you should follow the rules if you want to complain about others breaking them.