Because he either used or was given a Fulbright Scholarship.Back up. The accusation was that Obama was a foreign student. Look at your US passport. It says your place of birth. You do have a passport, don't you?
Fulbright Scholarships were only given to Foreign Students.
Obama was schooled in Jakarra at the St.Francis of Assisi School.
His name was listed as Barry Soetoro,An Indonesian citizen and
Muslim.
Obama used that Fulbright Scholarship to attend Occidental
College.
Somewhere along the line Barack Obama was adopted by
Lolo Soetoro,conferring Indonesian citizenship on him.