For a spouse-based Form I-730, Refugee/Asylee Relative Petition, the starting point is evidence that the marriage exists and that the relationship meets the requirements in the current Form I-730 instructions. Do not assume that one type of document works in every case.
Start with the civil marriage record
Keep a clear copy of the official marriage certificate or other civil record showing the marriage. Preserve the complete document, including stamps, registration information, annotations, and the back side if it contains information.
If the document is not in English, prepare the translation required by the current USCIS instructions and keep the foreign-language original with the translation.
Also preserve records about earlier marriages
If either spouse was previously married, organize records showing how each earlier marriage ended, such as a divorce decree, annulment order, or death certificate. Names and dates should be consistent across the packet.
When primary evidence is unavailable
USCIS instructions may allow secondary evidence when required primary records do not exist or cannot be obtained. Keep evidence of why the primary record is unavailable and organize any alternative records that may help document the relationship.
Do not create or alter documents to fill a gap. If a civil record cannot be obtained, record what you tried, when you tried, and what response you received.
Build a simple relationship folder
A useful review folder can contain: the marriage record; termination records for prior marriages; identity records for both spouses; translations and translator certifications; secondary relationship evidence if relevant; and a short list of missing records or questions for qualified legal review.
Check timing and eligibility separately
Documents proving a marriage are only one part of Form I-730 eligibility. The timing of the relationship and other requirements matter. Use the current USCIS Form I-730 page and instructions rather than relying on an old checklist.
Official source
This article provides general organizational information, not legal advice. A qualified immigration attorney or DOJ-accredited representative can review whether particular evidence is sufficient for a specific petition.