Lead poisoning cases in China have raised concerns about the government's ability to protect the public, advocates say.
China may face import tariffs over failure to impose greenhouse gas curbs.
China's press and the public are raising doubts about the government's claims of economic growth.
Major changes in U.S. restrictions on exports to China are unlikely following dialogue meetings, experts say.
China’s National Bureau of Statistics blasts charges that its reporting of economic growth is inaccurate.