RFE's from NVC

[miker32us]

I have seen many postings concerning RFE's from NVC in which NVC is asking for notarized or original documents which were submitted as a part of the I-130 package. Does USCIS forward all documents used for the I-130 approval to NVC or does USCIS keep some? Perhaps these are cases in which the documentation gets lost along the way, perhaps it is a case in which things get filed in different folders????

 

If it is the responsibility of USCIS to approve or disapprove of the I-130 petition for immigration, what responsibility does NVC have which requires them to ask for certified copies, for example, divorce decrees or criminal clearances.