The Chinese have been in the USA since the 1840's where they developped the Tongs. But most Tongs aren't that deeply involved in criminal activity anymore. Most Chinese gangs in the USA are mainly composed of first- or second-generation immigrants from Hong Kong, Taiwan and Malaysia. Also a lot of ethnic Chinese from Vietnam ( the Hoa people are so-called 'ethnic Chinese, even though they have both Chinese and a small degree of Cham ancestry). That's why I count the Chinese groups in the USA among the 'foreign' groups