U.S. Trade Representative Jamieson Greer said China imposes a cumulative tariff burden of about 55% on imported goods, a figure he used to underscore what Washington views as persistent barriers to American exports. Greer also described trade relations with Switzerland as “challenging,” pointing to a roughly $40 billion U.S. trade deficit that he said is driven largely by Swiss pharmaceutical shipments. He indicated that the administration sets tariff levels in part by the size of bilateral imbalances. His remarks come as the Trump administration rolls out a new round of tariffs covering dozens of countries, signaling that partners with sizeable surpluses—such as Switzerland—could face higher duties if talks fail to narrow the gap.