Our 'movies about presidents' series continues (probably for four more years) with a much better movie this time. 1993's Wolfgang Peterson joint In the Line of Fire , featuring Clint Eastwood again (are we... doing a Clint Eastwood season now?) as jaded old Secret Service agent Frank Horrigan, veteran of a particular epic fail in Dallas 1963, up against the 90s serial killer shtick of rogue CIA…