The weakest part of our political system, by a considerable margin, is the presidential nominating process. It tends to exclude from consideration those with the greatest experience in what is uniquely the president's responsibility, foreign policy and military strategy.

In his superb speech in Tucson, Ariz., Wednesday evening, Barack Obama did great service to the nation. He put to rest the libel that political incivility is responsible for the Tucson shootings. He did so with three words that he added to the written text: "It did not."

The steam seems to be going out of the move to "deftly pin this" -- the shooting of Arizona Rep. Gabrielle Giffords and 13 others -- "on the tea partiers," as one unidentified senior Democratic operative put it to Politico.