The war’s economic impact could get worse for Americans

Amazon is adding a fuel surcharge to its e-commerce deliveries. Mortgage rates have risen to their highest mark in seven months. And consumers may soon see higher prices for soda bottles and detergents. These are all early indications of the Iran war’s impact on the U.S. economy. So far, the costs of the joint U.S.-Israeli military campaign have been modest, especially compared with the economic turmoil roiling Asia, and U.S. growth remains solid. On Friday, the Labor Department said employers added a robust 178,000 jobs in March. But like thunderclaps that herald an advancing storm, rising energy bills, interest rates…