Yes, you can elect to file a joint return. If, at the end of your tax year, you are married and one spouse is a U.S. citizen and the other is not, you can choose to treat the nonresident spouse as a U.S. resident for tax purposes.
You can complete the return in TurboTax, but you will have to mail it in because you have to attach declarations. See Nonresident Alien Spouse.
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