I don't mean to pick on you specifically, but protectionism is so flawed I keep coming up with additional ways to beat it up. Here's another one that directly attacks the "immobile capital" idea:
Capital is certainly NOT fixed between the states. If capital MUST be immobile, then each state MUST be loosing out on the gains that comparative advantage produces. Every time a person in New York buys a florida orange, instead of growing it himself, he must become poorer, or the "immobile capital" idea falls flat on its face.
So, anyone want to explain how the mobility of capital makes free trade between Florida and New York a bad idea.(keep in mind that the line between America and China can be ignored(or respected)just as easily asthe line between Florida and New York can be ignored)
"I do not add 'within the limits of the law,' because law is often but the tyrant's will, and always so when it violates the right of an individual."