You should apply to get an ITIN for your wife. https://www.irs.gov/individuals/international-taxpayers/taxpayer-identification-numbers-tin#:~:text=...
If your spouse is a nonresident alien and you file a joint or separate return, your spouse must have either a Social Security Number (SSN) or an Individual Taxpayer Identification Number (ITIN).
Answers are correct to the best of my ability but do not constitute legal or tax advice.
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