In 1996, the gasoline additive MMT was brought to Canada by Ethyl Corporation, an American company when the Canadian federal government banned imports of the additive. The American company brought a claim under NAFTA Chapter 11 seeking US$201 million, from the Canadian federal government as well as the Canadian provinces under the Agreement on Internal Trade (AIT). They argued that the additive had not been conclusively linked to any health dangers, and that the prohibition was damaging to their company. Following a finding that the ban was a violation of the AIT, the Canadian federal government repealed the ban and settled with the American company for US$13 million. Studies by Health and Welfare Canada (now Health Canada) on the health effects of MMT in fuel found no significant health effects associated with exposure to these exhaust emissions. Other Canadian researchers and the U.S. Environmental Protection Agency disagreed citing studies that suggested possible nerve damage.