At least as far as tomorrow's Ashcroft v. Raich case.
Volokh blogger Randy Barnett argues his first case before the high court in defense of a 9th Circuit decision. The case, simply put, involves the extension of the commerce clause to home-grown marijuana used solely for personal medical use as allowed under California state law. The federal government argues that such marijuana affects interstate commerce, and can therefore be regulated by Congress. Barnett argues that the commerce power has limitations and medical regulation has largely been left to the states.
The most important federalism case in several years. Which way do they jump?