From The China Confidential blog:
Voice of America (VOA) reported Thursday that an American official accused China of failing to do all it should to stop militarily significant supplies from reaching Iran, even though China voted for United Nations sanctions aimed at preventing Tehran from developing nuclear weapons.
Ambassador Don Mahley, who is Deputy Assistant Secretary of State for international security and nonproliferation, told the US-China Economic and Security Review Commission that Chinese companies sold items to Iran that the United States considers banned under UN resolutions aimed at preventing Iran from acquiring nuclear weapons capability.
Commonly called the China Commission, the US-China Economic and Security Review Commission is a Congressional advisory body that was created in the year 2000 to monitor, investigate, and submit to Congress an annual report on the national security implications of the bilateral trade and economic relationship between the US and China, and to provide recommendations, where appropriate, to Congress for legislative and administrative action. [Full Text]