The November 11 edition of NPR's "All Things Considered" features a segment on Judge Alito's decision in Rybar, in which Alito followed the Supreme Court's Lopez precedent to write that a federal ban on machine gun possession was not a valid exercise of the federal power to regulate interstate commerce. Guests on the program were Eugene Volokh, Kristin Rand of the Violence Policy Center, Erwin Chemerinsky of Duke Law School, and me.