Evidence

A foreign marriage is proved by the record the country of celebration issues, plus evidence the marriage was legally valid there and that the relationship is real.

Any foreign-language document filed in an immigration case needs a complete English translation and a signed certification from the translator that it is accurate and that they are competent to translate.

A supporting statement is only worth the paper when it says who the writer is, how they know what they know, and what they personally saw. Everything else is padding an adjudicator discounts.

Only a handful of jurisdictions still let a couple become married without a license, and each of them requires a present agreement to be married plus public conduct that matches it.