Commentary  Last Sunday, U.S. regulators suspended avocado imports from Mexico after a U.S. inspector in Michoacán allegedly “received a threatening message on his official cellphone.” The U.S. government claims this alleged threat was the catalyst for the ban, since, according to the U.S. embassy, “facilitating the export of Mexican avocados to the U.S. and guaranteeing the safety of our agricultural inspection personnel go hand in hand.” The United States has further stated the ban will remain in place “as long as necessary” to ensure the safety of U.S. inspectors. It might be news to many Americans that the U.S. employs inspectors in Mexico. After all, many Americans still subscribe to an outdated and naïve view of trade relations in which trade is managed primarily through tariffs and goods are simply taxed at the point of entry. The whole affair of this week’s avocado ban helps illustrate just how much is going on …