The border fight that America does not need

I SPENT OVER THREE YEARS AS A FOUR-STAR admiral and commander of U.S. Southern Command from 2006 to 2009, in charge of all U.S. military forces throughout Latin America and the Caribbean. Part of my duties entailed traveling extensively from my Miami headquarters through the countries of Central America that have been cleaved by violence. I have traveled many times through much of what is now the route taken by, at minimum, 5,000 migrants traveling in caravans or other groups—mostly fleeing Honduras, Guatemala, El Salvador and Nicaragua—and led