China's President Hu Jintao arrived in the United States Tuesday for a state visit promising frank talk over economics and currency disputes, but likely to expose a wide gulf over human rights. Several human rights groups held a press conference today in Washington, including the wife of jailed human rights lawyer Gao Zhisheng. She asked US President Barack Obama to pressure the Chinese government to release her husband and other political prisoners. Excerpts from an AFPTV interview.Duration: 00:55