Solved
I have lived and worked abroad for the entire year of 2016. Is my son considered an 'accidental' American by default (i.e. US Citizen)? As his birth certificate is still being processed, and being a prerequisite to officially apply for US citizenship, I am not certain what his official nationality would be. Thank you.
That depends on the situation but the two most common situations are covered by the US Department of State at the website below. Depending on which situation your child falls into would determine how he would be classified on your tax return:
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