Well, the voters never seem to get a choice that isn't for "free trade".
Nobody in America is forced to buy any imported products. Everybody is free to choose what to buy. Perhaps just as importantly, one of the few things almost every school of economic thought agrees upon is the notion that free trade is far preferable to protectionism.
The best and most remarkable part of the Romney plan is the proposal for establishment of a free trade zone. Led by America and known as the "Reagan Economic Zone," it could potentially replace the WTO if implemented correctly with the right leadership (i.e., nobody is going to sign-up if Perry becomes POTUS and therefore makes America the laughingstock of the world again, just like Perry's predecessor Dubya).