David White nails him:
IMAGINE if Texas lawmakers, in a bid to protect mom-and-pop bookstores, barred Amazon.com from shipping into the state. Or if Massachusetts legislators, worried about Boston’s shoe boutiques, prohibited residents from ordering from Zappos.com.
Such moves would infuriate consumers. They might also breach the Constitution’s commerce clause, which limits states from erecting trade barriers against one another. But wine consumers, producers and retailers face such restrictions daily.
Last month, Representative Jason Chaffetz, Republican of Utah, introduced a bill in the House that would allow states to cement such protectionist laws.