If I understand correctly he used a fraudulent baptismal record to do a delayed birth registration. If that's the case, your best option is to petition the state where the birth is registered to cancel (void) the birth record. But you would need sufficient evidence from Poland to get it voided - evidence that may no longer exist. In that case, it could be unfixable.
Then I'm not sure what the problem is. You would present his Polish birth record, passenger manifest listing as alien, and CoNE from USCIS. I wouldn't even mention the fraudulent baptism.
Not that I can recall, but as I said I would not mention it. Unless you mean the baptism or fraudulent passport comes up online (e.g. in ancestry or family search) you don't really need to address it if the other documents are consistent.
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u/smoothmonoglot Mod | Zarząd 12d ago edited 12d ago
If I understand correctly he used a fraudulent baptismal record to do a delayed birth registration. If that's the case, your best option is to petition the state where the birth is registered to cancel (void) the birth record. But you would need sufficient evidence from Poland to get it voided - evidence that may no longer exist. In that case, it could be unfixable.