HI, everyone: I have a question about interview. If american peptitioner paid the immigration visa fee ($380), does the chinese applicant need to show the receipt when they go for the interview? as i recall, after I (I am the petitioner) paid the IV fee bill, I got P3, and I did not get receipt from DOS, however I saved the customer receipt from the Post office when I was in a post office mailing the fee. I sent a copy of this post office customer receipt to them (just a copy, not the original one, because I think I should keep the original customer receipt), But if the chinese applicant does not need to show them the receipt, how can they know if the petitioner (or chinese applicant) paid $380 or $335 (as I know the old fee was $335), Thanks,