maybe all of the American people - don't believe the benefits of this trading relationship are spread evenly. Congress is reflecting that sentiment," Paulson told US public television last week. Washington has gotten tougher with China in the run-up to Tuesday's talks. The US filed two complaints against China with the World Trade Organization (WTO) in April, targeting copyright piracy and Chinese barriers to US music, films and books. In March, the US overturned more than two decades of trade policy and slapped duties on Chinese imports for the first time, designed to counter alleged Chinese export subsidies.