Why not? States rights have been far too de-emphasized - the Republicans only trot it out when it suits their purposes, and most Democrats don't even seem to remember it. (At least one state will still have an environment if Greenpeace takes it over.)

Now we just need to figure out what New York will be a haven for.

(And considering how NY State, and NYC in particular, gets consistently stiffed and robbed by the federal government, maybe succession wouldn't be that bad of an idea?)