Yes. You can elect to file a joint return with your nonresident spouse. If you do, all your worldwide income will become taxable.
You can file an extension if you are not able to get an ITIN before April 18 with TurboTax.
Generally, neither you nor your spouse can claim tax treaty benefits as a resident of a foreign country for a tax year for which the choice is in effect. However, the exception to the saving clause of a tax treaty might allow a tax treaty benefit on certain specified income.
See Nonresident Spouse.
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