Couples with NRA spouses have to choose – file jointly and lose stimulus eligibility or file separately and possibly pay higher tax
Stimulus Payment Critical Update for Non-Resident Alien Spouses
Couples filing jointly where one of the spouses is a non-resident alien with ITIN or Social Security number stamped “Not valid for employment” ARE NOT ELIGIBLE. The entire family is ineligible, not just the spouse without valid SS# (FAQ 13)
The exception is given to the families where either spouse was a member of the US Army at any time during the taxable year.
Whole Story at TFX.