US and China dispute over East China Sea

The Chinese government has decided that they want fly over rights to be enforced in the East China Sea under the ADIZ(Air Defense Identification Zone). This requres a plane to file a flight plan with the chinese governement before entering their air space or they would respond.
The Japanese government and their domestic airlines have decided to not to honor that request.
The US government has also stated that they will not honor that request however through the FAA the US government has advised US airlines to abide by this new policy.