You wrote in part:
You should ask the Polish Border Surnames (PBS) list and also
post the question on other Polish genealogy lists.
I believe that when you ask for a record from Poland you have to
submit an affidavit of some kind that shows you are directly related
to the person on that record if it is less than 50-100 years old.
It depends on whether the record inquiry is directed toward a civil
registry office or a parish/church archive.
What kind of record/certificate is being sought?
Subscribers to those other lists may have some experience getting
documents from Poland for genealogical purposes.
If you need the document for some kind of legal purpose in the U.S.
you might consider trying to get it through a diplomatic agency like
the U.S. Embassy in Poland or a Polish Consul in the U.S.
The Polish Embassy and Consulare offices don't want to be involved in
initiating routine genealogical inquiries. Persons can contact Polish
registry offices, called Urzad Stanu Cywilnego, directly and if the
registry office has the requisite source record a certificate will be
prepare and sent to the Consulate with a bill. The Consulate will
contact the inquirer.