The key is if you put all your money in in PA to move to a state where they don't tax it at all (no income tax) or IL or... Alabama? Where they don't tax it coming out of the retirement acct.

I guess it would take Congress to pass a law to harmonize the system if Congress itself constitutionally.can. I'm not sure they can because states can levy their own taxes without the federal government. Maybe the federal government could arm twist like they did with the drinking and smoking age.