This man should play him. A dead ringer, imo. Hubby was watching a movie: Collateral Damage, when I stopped in my tracks passing by. I ask him "Who is that?!"  I remember him from ER now. Funnily enough, he played on a short-lived tv series "Commander in Chief" although I don't know exactly his role. Geena Davis played the President.

see him here:  http://www.imdb.com/name/nm0502015/

It's eerie, really.