Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. US Threatens $4 Billion in Additional Tariffs on EU Goods VOANews The United States is threatening to impose tariffs on $4 billion in European Union (EU) goods over a lengthy dispute involving subsidies for the world's two largest plane manufacturers. The U.S. Trade Representative's Office (USTR) released a list Monday of additional products the U.S. could target in addition to the $21 billion worth of EU goods that were announced in April. Among the list of additional goods are a variety of metals, olives, Italian cheese and Scotch whiskey. The USTR said the supplemental list was compiled in response to public comments, but did not elaborate. The U.S. and the EU have traded threats of retaliatory tariffs on planes, food and other items in a nearly 15-year spat at the World Trade Organization (WTO) over illegal aircraft subsidies given to U.S. plane maker Boeing and European rival Airbus. Senior officials from Boeing and a U.S. aerospace lobbying group urged the U.S. government last month to customize any new EU tariffs to avoid hurting American manufacturers. .