Michael Keaton is headed for the Oval Office as he has signed on for a starring role as the president of the United States in the Regency Enterprises romantic comedy "First Daughter." Keaton will star as a president whose daughter (Katie Holmes) goes to college and falls into a fairy-tale romance with a dashing graduate student (Marc Blucas) only to find that her prince has a secret agenda. "First Daughter" is being directed by Forest Whitaker from a Jessica Bendinger script. John Davis is producing through his Davis Entertainment banner, with Davis Entertainment president Wyck Godfrey also producing. Regency senior vp production Kara Francis and president Sanford Panitch are overseeing the project, which is being fully financed by Regency. Keaton, who most recently starred in the HBO telefilm "Live From Baghdad," has appeared in such films as "Out of Sight," "Jackie Brown" and "Multiplicity." He is repped by Endeavor.