The viral campaign for The Dark Knight Rises has been revving up with newspaper clippings heralding “Harvey Dent Day” in order to honor Aaron Eckhart’s deceased district attorney from The Dark Knight, but it appears the actor is getting back into politics in a big way post-Batman.  Variety reports that Eckhart has been tapped to play the President of the United States in director Antoine Fuqua’s thriller Olympus Has Fallen (aka White House Taken).  Gerard Butler stars as a Secret Service agent who becomes the country’s only hope when the White House is overrun by terrorists.The film is in direct competition with Roland Emmerich’s very similarly plotted White House Down, and Eckhart may be taking part in a POTUS-off with Jamie Foxx, who is considering playing the commander-in-chief in Emmerich’s pic.  Olympus Has Fallen is moving forward first, with production set to get underway in September.  Eckhart will next be seen in The Expatriate, and he recently wrapped the starring role in the Dean Koontz adaptation I, Frankenstein.