Hello, my in-laws entered the USA on an IR-5 visa yesterday. At their POE they had one sealed envelope and another unsealed envelope which contained their birth cert, marriage cert, name change, police cert...etc - basically all the paperwork that was submitted to NVC. The immigration officer kept both envelopes after going thru them. Is this standard operating procedure? I believe they keep the sealed one but was wondering why they took the unsealed one. Will they get that envelope back?