thanks a lot.

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While FTA treats producers of its member countries differently from those outside the agreement, the WTO requires MFN (most favorable nation) treatment, the principle of nondiscrimination, to be generally applied equally to all the countries.
This

Also in 2011, total U. S. -China trade was $500 billion, and the U. S. trade deficit with China was $295 billion, making it the largest bilateral trade deficit the United States has ever had. While many of the challenges to the American economy are domestic in nature, international trade and investment matter. In 2008 more than 15 percent of U. S. gross domestic product came from international trade. The strength of the American economy also matters for U. S. -China economic relations. The size and strength of the American economy has underpinned U. S. leadership in the world, and the long-term prospects for U. S. economic growth are essential for maintaining this role. How it manages its economic relationship with China will have important implications for the U. S. economy and job creation. Endeavors in this regard will also help ensure that China plays a leadership role in supporting the current global economic order.