Not long after the decision in Raich, the Court vacated a lower court decision in United States v. Stewart and remanded it to the court of appeals for reconsideration in light of Raich. In Stewart, the Ninth Circuit had held that Congress lacked the Commerce Clause power to criminalize the possession of homemade machine guns.
http://en.wikipedia.org/wiki/Gonzales_v._Raich
This is a sovereign state acting v. “Robert W. Stewart, Jr., a convicted felon”