Unless the state legislatures have more fortitude than most, it’s a symbolic protest. Pelosi made provisions to go around the Govs if needed:
http://www.freerepublic.com/focus/f-news/2187142/posts
And doesn’t that go over the Constitution, as to states rights?
The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
Simple congressional legislation does not supersede the 10th amendment.