回复：请问有结婚证,在美国能办理公证吗,怎么办?

Just ask your friend to translate it into Englsih and then, go to the bank to notarize your friend's signature in the translation copy and also notarize your Chinese photocopy (verify that it is the copy of the original one). Your friend also need to make a statement that he/she knows both Chinese and English very well.