According to court documents in Miami, Wei admitted to agents after Li's arrest that he knew about Li's smuggling and had purchased rhinoceros carvings from Li that apparently had been smuggled from the United States.
Mr Wei, who was sharing a hotel room with Mr Li, later asked an undercover informant to take a fish and wildlife officer out for dinner and offer her money to help Mr Li, prosecutors said.
Also arrested on a related criminal complaint in Miami was Shusen Wei, a Chinese business executive, who also attended the antique show and shared a hotel room with Li.