bank statement is not a solid proof, in that case he is more likely to claim that he gave you cash  sometimes earlier. so try that too. Just because someone claims that you are illegal nobody has a right to check your status ( also file a charge against him on spying  on you and tormenting you on the basis of your accent, color, nationality and baseless immigration status :). Nobody has a fuqing right to torture you and ask for your SSN/immig status unless you are involved in a serious crime.  I did the same long time ago. I know how to play with crooks.