혹시 Sprintax 질문들 대답하실때 tax home 을 미국이 아닌 한국으로 잘 못 기입하신게 아닌가 하는 생각이 드네요.
"Gain or loss from the sale or exchange of personal property generally has its source in the United States if the alien has a tax home in the United States. The key factor in determining if an individual is a U.S. resident for purposes of the sourcing of capital gains is whether the alien's "tax home" has shifted to the United States. If an alien does not have a tax home in the United States, then the alien’s U.S. source capital gains would be treated as foreign-source and thus nontaxable.
Thus, under this rule, most foreign students and scholars and most alien employees of foreign governments and of international organizations have shifted tax homes to the United States on the day of their arrival in the United States - unless the particular program or employment which brings them to the United States clearly terminates in less than..."