http://www.telegraph.co.uk/news/worl...inst-Iran.html
If the USA was behind this, it's probably a Bush program. The USA in my opinion doesn't have anything to do with this; the Mullahs were just stupid and rigged a landslide when 51% would of prevented a second election and without demonstrations erupting.
They wanted the landslide because rumors are the Supreme Leader is sick and wanted capital to appoint a real hard liner to that post with reformists meddling.