According to the Constitution,Congress can change the law, and any law that the Supreme Court deems Constitutional or not.
Like we have seen for Obamacare for over 6 years, the GOP does not have the inclination to do anything as it has played us for the last 43 years like it was actually going to do something about abortion.
Is the VP Congress? No! The best you can say is that the VP is a tie breaker.