Well, obviously that's exactly what I did, and none of the references that I checked said anything about it having reached the US Supreme Court.
Then I narrowed the search by adding "Supreme Court" and still all the excerpts showed that those links were referring to the Iowa Supreme Court. I was able to find two links on Yahoo that DID have "US Supreme Court" near Katko and Briney, but they were both posts by YOU on Free Republic. If this case really did go to SCOTUS, you seem to be the only person willing to write about it. Finally, I checked the Wikipedia article on the case, http://en.wikipedia.org/wiki/Katko_v._Briney, and IT says nothing about it having gone to the US Supreme Court.
Recheck your facts my friend. If it really did make it, which I doubt, get us a link or a case number.