Most functional is a relative degree. California and Texas are obvious choices, but the problem would be that the U.S. would be active against it. Thus, I would say for all the egotism of Texas and California, those folks would be in a failed state.
"No religion is true, but some religion, any religion, is politically necessary. Law and morality are insufficient for the large majority of men. Obedience to the law and to the morals are insufficient for making men happy. […]Law and morality are therefore in need of being supplemented by divine rewards and punishments."
NY maybe if we're talking about the state, plenty of resources upstate. CA, no way, they'd collapse without the water and electricity from other states. Not sustainable.
Oregon. Great beer, great food, great herbs. I even like the rain.
"When Faith preaches Hate, Blessed are the Doubters." - Amin Maalouf