Chasing Liberty (2004)
Chasing Liberty is a 2004 American romantic comedy film directed by Andy Cadiff and starring Mandy Moore and Matthew Goode. Written by Derek Guiley and David Schneiderman, the film is about the eighteen-year-old daughter of the President of the United States whose rebellion against the constant presence of Secret Service agents in her life leads to a European adventure and an unexpected romance. Chasing Liberty was filmed on location in Prague, Venice, Berlin, London, and Washington, DC.
More at Wikipedia.