What state does not enforce alimony payments?

Is there a state that does not support alimony payments ordered in NC?

I mean, if my ex was ordered to pay alimony by an NC judge and moved to another state could he potentially stop paying alimony without getting in trouble?

I have heard that there are certain states that do not enforce the payments and will not help extradite the spouse to the state where the judgement was made or they will not pick the ex spouse up on a warrent for the same.

Is any of that true???