Catherine Rampell:

Or so allegedly free-market, anti-protectionist Republican legislators and governors pretend to think, given that they have been doing their damnedest to protect auto dealers (for both GM and others, to be fair) from the threat of competition.
 
 This week Michigan Gov. Rick Snyder (R) signed a law effectively banning Tesla Motors, the high-end electric car manufacturer, from selling its cars in the state. It is the fifth state to do so, following Texas, Arizona, New Jersey and Maryland, and a slew of other states are erecting other creative restrictions that make it harder for the Silicon Valley upstart to sell cars locally.
 
 To clarify, none of these states has explicitly singled out Tesla in legislative language; instead, they just require anyone wishing to sell a car to consumers to do so through an independent dealership. The middleman, you see, wants his cut.