ORANGE, Calif. — A flight student from Egypt is facing deportation from the United States after being investigated by federal agents for posting on his Facebook page that he was willing to kill Donald Trump and the world would thank him.

While U.S. prosecutors have not charged 23-year-old Emadeldin Elsayed with a crime, immigration authorities arrested him last month at the Los Angeles-area flight school he attended and are trying to deport him, attorney Hani Bushra said Wednesday.

Elsayed, who is being held in a jail in Orange, Calif., is devastated at seeing his dreams of becoming a pilot dashed over what Bushra acknowledged was a foolish social media post.

Trump is leading the Republican presidential contenders and has vowed to build a wall along the Mexican border and has called for temporarily banning Muslims from entering the United States.