A massive twit-storm washed over your humble columnist yesterday, set off by our Wall Street Journal op-ed defending an Obama nominee and the rights of criminal defendants. To recap briefly: Sen. Claire McCaskill has placed a "permanent hold" on the nomination of Gen. Susan Helms to be vice commander of the Air Force Space Command. McCaskill is punishing Helms for having granted clemency to an officer under her command, Capt. Matthew Herrera, who was convicted of aggravated sexual assault.

We reviewed the facts and...