From a Washington Post editorial:
SINCE JOINING the World Trade Organization in 2001, China has proved serious about honoring its commitments. It has rewritten laws and regulations to comply with WTO rules, so much so that the United States and the European Union, which bring high-profile cases against each other before WTO tribunals, have a hard time identifying cases to bring against China. But China is treating its WTO commitments as a ceiling, not a floor. It appears unwilling to modify its behavior in other areas, and this may strain its relations with the United States.