By: Mark Glennon*   Suppose we agree that something locally produced — anything, widgets let’s say  — is unaffordable for many people. And suppose we want to make those widgets more affordable. How does this solution sound? Pass a law ordering local widget makers to sell 10% of their widgets at a lower price. If they don’t, make them pay a fee and give the fee to the government to make widgets.   Put it that way to an average 12-year-old and I think we could guess at some answers: Widget makers would just go somewhere else. It’s not