As the tax reform debate rages on currently, I do not see much in the proposals changing for US citizens living abroad. As this story unfolds, I think it is a good thing that US citizens/ resident aliens living abroad are not affected. We shall wait and watch. For all the latest news-stay tuned! As it happens many times for those US citizens who have moved abroad and married someone who is a citizen of their resident country, when times comes to file a tax return, they have to use the "Married Filing Separately" or the "Head of Household" filing status. Both of these may not be as advantageous as the "Married Filing Jointly" filing status tax-wise.