Comment by erentz

Supreme court determined a long time ago that a state cannot implement a residency requirement (e.g. 1 year minimum residency) before accessing that states benefits.

> If a state wanted to implement something like Medicare for All, I think they could just do that.

Yes. But for the problem explained. Also you can throw in issues such as states can't issue their own currencies or treasuries to finance things.

Really the USA is not set up for this kind of "confederation". We are a federation of states that have very limited powers and very stupidly drawn borders. If we want what it sounds like you're after then we need more a European Union style set up. Not separate states. But entirely separate countries. Basically we should decide if we're a country called the USA and are all American's first, or if we're all Kentuckians, Texans, Washingtonians, first and American's second.