Mark Leibovich’s new book “This Town” opens at the funeral of NBC’s Tim Russert, the “mayor” of elite Washington D.C. Amid genuine mourning and sadness, the memorial soon devolves into the ultimate networking event for the capital’s entrenched and powerful cabal of lobbyists, socialites and pundits. Leibovich joins us in studio to discuss the controversial book, which offers a rare and colorful glimpse into the Beltway’s permanent political class.