Zhao had just spoken with many entrepreneurs and investors from China at the 2018 SelectUSA Summit held in National Harbor, Maryland, two weeks ago. We also heard from Chinese and American companies that are really concerned about the tariffs," Zhao added. Some American states expressed their concerns about the possible impact of tariffs on their products. Cioni-Haywood is also concerned that the tariffs on aluminum and steel may have an impact on the natural gas pipeline in her state. The letter came after the Trump administration unilaterally imposed tariffs on steel and aluminum imports in the name of national security.