For you, Kent Davis, a little lesson in civics--

Article III of our glorious Constitution established the Federal Court system.

Section 2 describes the areas where the Federal Courts will have primary jurisdiction (and specifies that the Supreme Court has apellate jurisdiction) and the part that you quote means simply that the Congress can assign primary jurisdiction on particular issues to the Supreme Court, rather than the Federal Courts, if it wants to.

It doesn't mean that Congress can prohibit the Supreme Court from ruling on any specific issue--

If the Brownback Bill forbids action against a Federal Agency or Representative on the basis of refererence or respect to "God", then it violates the first Amendment clause about freedom of religion. If it forbids any legal action against Federal Agencies or their agents, it violates the clause about right to petition--meaning that, if, on the thinest thread of a chance, it is passed into law, there will be a constitutional challenge to it.

You have to hand it to Brownback and the boys--they are ambitious--most people would violate just one of our Constitutional Rights and call it a day;-)