Under a Massachusetts statute, large wineries could sell their products through wholesalers or to consumers directly, but not both. Small wineries could use both methods. Family Winemakers of California filed a suit against the state, arguing that this restriction gave small wineries a competitive advantage in violation of the U.S. Constitution. Which source of law takes priority, and why? [Family Winemakers of California v. Jenkins, 592 F.3d 1 (1st Cir. 2010)]