In this Jan. 28, 2013 photo, Chinese-born U.S. scientist Hu Zhicheng stands at the waterfront promenade along the Huangpu River in Shanghai, China. Hu, who was held in China for nearly five years ... more 
In this Jan. 28, 2013 photo, Chinese-born U.S. scientist Hu Zhicheng stands at the waterfront promenade along the Huangpu River in Shanghai, China. Hu, who was held in China for nearly five years after he became involved in a dispute with a competitor has been allowed to return to his Southern California home, his wife said Tuesday, June 4, 2013. (AP Photo/Eugene Hoshiko, File) less 
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Associated Press | Photo By Eugene Hoshiko, File
Tue, Jun 4, 2013 10:21 PM EDT