Dana Mroueh, a small-business owner in Ivory Coast, was negotiating to introduce her organic chocolate bars into stores in New York and Washington when President Trump announced new tariffs on all U.S. imports last week. Ivory Coast is the world’s…

Dana Mroueh, a small-business owner in Ivory Coast, was negotiating to introduce her organic chocolate bars into stores in New York and Washington when President Trump announced new tariffs on all U.S. imports last week. Ivory Coast is the world’s…