First Daughter (movie, 2004)

Samantha MacKenzie, the daughter of the president of the United States, arrives at college with a group of Secret Service agents. Samantha, however, resents their presence and decides she wants to attend school just like a normal student. Her father agrees to recall the agents but secretly assigns James, an undercover agent, to pose as a student. They fall in love, but their romance is jeopardized when Samantha learns James' true identity.