To quote Reuters:
China and the United States are kicking up a trade war over chicken in which Beijing effectively has given the boot to millions of dollars worth of U.S. chicken, about half of which is chicken feet... China is a huge market for U.S. chicken feet, commonly called paws, and bought 421,000 tons, or $280 million worth, in 2008, according to the USA Poultry and Egg Export Council, a trade group.