So far there has been one article by Pat Buchanan which you can read at Human Events at this link http://www.humanevents.com/2012/11/30/pat-buchanan-americans-are-already-seceding-from-one-another/ He isn't endorsing directly secession or the secession petitions, but instead arguing that it is already happening essentially by other means. I think that is the closest he feels he can get to the issue.
Otherwise media coverage has died down except for a trickle of articles making fun of the petitions. It will be interesting to see Obama's response, but I think it will be all over and largely forgotten by Christmas.