[RightFighter]

That like a Congressional veto override, Congress can set aside Supreme Court rulings with a two-thirds vote in both House and Senate.

Not a good idea. Suppose Congress passes a law that says that you are not allowed to criticize Congress or the President in online blogs like FreeRepublic. The Supreme Court issues an opinion that says this is an unconstitutional violation of first amendment rights. What you're suggesting is that the Congress could then override that Supreme Court decision and the law would stand as passed.

[Conscience of a Conservative]

Exactly. An amendment that allowed Congress to override any Supreme Court opinion would obliterate the rest of the Constitution (and the amendment process in particular). It would mean that a 2/3 majority of Congress could de facto amend the Constitution without the states.