because, firstly, Obama needs to implement some major policies and consolidate his Administration's stature.
So, everything in its time. As the media becomes more and more honest, more genuinely democratic/less partisan propagandist, and the right wing becomes increasingly discredited, indeed infamous, with the country's growing economic woes, the more viable and valued will Dennis' expertise and insights become in the political process, because a whole new (or rather old) paradigm will have to be adopted throughout the developed world.
http://www.dallasnews.com/sharedcontent/dws/dn/opinion/points/stories/DN-dreher_26edi.State.Edition1.21c9278.html