You can only file jointly if you elect to file jointly. This means reporting 100% of the non-USCs income/gains etc to the US for ever unless the election is revoked in which case it can never be made again with the same spouse.
You are correct. But, I was referring to the answer given by the IRS, quoted below, which is wrong for two reasons.
Quote:
"Where the USC is married to a non-USC and you both live outside the US, your filing status should be Married Filing Seperately. "
1. You have the right and choice to file MFJ regardless of place of residence.
2. Planning for the future, when applying for citizenship, that will be one for the first things to
be reviewed by the USCIS (former INS):did you file jointly? If you didn't, there better be a very good reason for it.