Free trade is a good moral concept for the simple reason that politicians and bureaucrats should not be allowed to interfere with voluntary transactions between consenting adults. It’s also a good economic concept for the simple reason that protectionists can’t provide good answers to simple questions. And free trade is a good geopolitical concept because it is far better than foreign aid as a mechanism for generating prosperity in less-developed nations. Writing for the Economic Times of India, Bjorn Lomborg of the Copenhagen Consensus Center writes about the benefits of open markets among nations. With one simple policy—more free trade—we...