Which American president spoke Dutch as their first language?

Context: Van Buren received a basic education at the village schoolhouse, and briefly studied Latin at the Kinderhook Academy and at Washington Seminary in Claverack. Van Buren was raised speaking primarily Dutch and learned English while attending school; he is the only president of the United States whose first language was not English. Also during his childhood, Van Buren learned at his father's inn how to interact with people from varied ethnic, income, and societal groups, which he used to his advantage as a political organizer. His formal education ended in 1796, when he began reading law at the office of Peter Silvester and his son Francis.

Answer: President Van Buren spoke Dutch as his first language. He is the only president of the United States of America who spoke English as a second language.