In summer 1992, Kamm received a request to intervene on behalf of Hong Kong businessman Chong Kwee-sung. Chong, an American green card holder, was taken into custody at the border crossing between Hong Kong and mainland China in August 1991 and immediately transported to Zhengzhou, Henan Province. Three months later he was formally arrested on suspicion of fraud. Kamm connects with now head of Ministry of Public Security Zhu Entao – whom Kamm knew from the 1970s as Guangzhou Trade Fair’s Liaison Office for westerners – pleading for Chong’s release. Weeks later, Chong was released and allowed to return to Hong Kong.