The USCIS will require a legal and lawfully acceptable state proof of such marriage, therefore I think a State Marriage License or a Marriage Certificate will be necessary to obtain.
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Respectfully, Attorney Alexander Ivakhnenko, Chicago, Illinois
You can bring evidence of the church record and register your marriage to obtain a state-issued legal marriage certificate, usually from the local Courthouse. This legal marriage certificate is what you will need to show to apply to petition for your husband.
Gunda J. Brost
Brost Law Office
This advice does not form an attorney-client relationship and is merely informative. It should not by itself be relied upon to address a legal concern.