While few studies have been devoted to the health effects of genetically modified (GM) foods, some scientists claim that a link exists between the resurgence of infectious diseases and genetic modifications in the U.S. food supply. In contrast to Americans, Europeans have voiced strong opposition to GM foods and, in response, the European Union (EU) has imposed a five-year moratorium on the purchase of GM crops. The Bush Administration, however, views European skepticism toward GM foods as unfounded because those crops are subjected to USDA, FDA, and EPA approval. Earlier this year, U.S. Trade Representative Robert Zoellick announced that the U.S. would file a case against the EU on the grounds that restricting the sale of GM foods to Europe was in violation of international trade laws set forth by the World Trade Organization (WTO). The subject of this vote was a resolution expressing support for the administration's challenge to the EU moratorium which rejects the European importation of GM food from the United States. Progressives voted in opposition to the resolution because, in their view, the potential consequences of genetically-modified foods to humans and the environment demand further investigation. Moreover, Progressives argued that the U.S. has no right to force GM foods on the rest of the world and especially those European countries whose citizens reject GM foods. The resolution expressing support for the administration's position was adopted overwhelmingly on a vote of 339-80.