This iconic photograph portrays the ordeal that Chinese immigrants faced during the years of the Chinese Exclusion Acts (1882-1943). This young Chinese is being interrogated by an Immigration Examiner in the presence of what appears to be a security officer and another man who might be an assistant taking notes on the testimony. Or, possibly he might be an interpreter (although he is not Chinese). There is no one present who might be an interpreter so it seems likely that the Chinese is fluent in English. It is not likely that he is a lawyer for the Chinese, given that he is seated next to the Examiner. The boy, or young man, appears to have his right index finger extended and resting on an object, possibly getting finger printed.
UPDATE: Less than a week after making this post, I found the announcement below that used this very image to publicize an event on the Angel Island Immigration Station. Whoever this young Chinese boy is, his image strongly evokes the dire situation faced by Chinese entering at Angel Island.