This week in Washington, D.C., diplomats from the United States, Canada and Mexico are re-negotiating the North American Free Trade Agreement (NAFTA), and the talks are "moving at warp speed," according to U.S. Trade Representative Robert Lighthizer.

Many Americans feel NAFTA has disadvantaged U.S. workers, especially those who produce raw materials or industrial products like auto parts. Others have complained about U.S. companies relocating factories to Mexico to take advantage of lax labor regulations. The Commerce Department has called out Canadian softwood lumber subsidies.