Senator Claire McCaskill has endorsed Hillary Clinton for president in 2016 and this is all the buzz (that is the right word, isn’t it?) at Morning Joe and other places where the insiders gather and do careful, elaborate dissections of the day’s essential news.  

This development may have as much to do with the senator’s career plans as anything else. Secretary of labor, maybe? Or education. One of those pointless bureaucracies with a multi-billion dollar budget and a car and driver.