Have you forgotten? Sean Hannity hasn't. The conservative radio and cable television megastar's most important contribution to political discourse since the Sept. 11 terrorist attacks has been his tireless reminder to America's liberal elite that the attacks did indeed happen — and that our enemies, foreign and domestic, must not go unpunished. For the Long Island native, this is a personal mission. He goes to church with families who lost members to the murderous destruction at Ground Zero. He has two young children whose futures and freedoms he passionately wants to preserve. Last July, he hosted a concert that raised...