The annual 2019 trade figures for the United States came out last week, heralding some encouraging news. America’s enormous international trade deficit actually declined slightly from 2018. This was the first decrease in six years, with the deficit in goods and services dropping 1.7%, to $616.8 billion. Better yet, America’s bilateral trade deficit with China fell for the first time in four years, dropping a hefty 17.6%, to $345.6 billion. These are promising numbers and they show that tariffs on Chinese products are successfully moving the needle on U.S. trade flows. In fact, America’s 2019 imports from China actually fell...