This interminable presidential campaign has produced more nonsense regarding international trade than Americans have heard in years. Rather than dissecting and rebutting the protectionist statements of candidates Donald Trump and Hillary Clinton, a more elucidating approach may be to step back and contemplate what a thoughtful candidate might say. Someone who understands economics and the importance of individual liberty would take a decidedly different approach.



Such a candidate might begin by pointing out how fortunate we are to live in a country that for the past 240 years generally has governed itself fairly well. People have been free to seek opportunity and to work in their own self-interest. They have done so with enthusiasm, thus causing the United States to grow from its modest colonial beginnings to become what is now the largest economy in the world. America accounts for 25% of global economic activity, far more than China’s 15%.
To foster future growth, the U.S. must preserve the freedom of individuals to engage in commerce in this country and around the world.
Engaging freely in commerce requires markets that are open and competitive. One of the benefits of open markets is that they spur economic growth by allowing scarce resources to be put to their highest-value uses. Bananas, for instance, are a scarce resource. It would be theoretically possible for the U.S. to prohibit the importation of bananas and instead produce them here in greenhouses.
However, this would result in very poor use of resources, as well as quite expensive bananas. It is far better for the U.S. not to control the market for bananas, but rather allow them to be imported from tropical countries where they can be grown in abundance at low cost.