Can congress nullify Supreme Court decisions?.
If SCOTUS rulings are clearly unconstitutional and far-reaching, I see no reason why not. Certainly the Constitution does not forbid such action. In fact, such action is part of the "checks and balances" of the three separate branches of government created by the Constitution. If one branch's acts are clearly unconstitutional and far-reaching, it is up to the other branches to call them out on it and "nullify" such unconstitutional action.
But it doesn't stop there. If no branch of the federal government has the guts or the will to forbid such unconstitutional actions, then it is up to the states and the people to call them out on it and "nullify" such unconstitutional action by the federal ("feral") government as a whole. The Ninth and Tenth Amendments as well and the persuasive authority of the Declaration of Independence confirm the right of the states and the people to do this. After all, the Constitution is not owned exclusively by the federal government. It is owned by all Americans as both the creator of and limitation on the federal government.