In March, at the Council on Foreign Relations, CIA Director John Brennan was asked by NBC’s Andrea Mitchell whether the CIA had illegally accessed Senate Intelligence Committee staff computers “to thwart an investigation by the committee into” the agency’s past interrogation techniques. The accusation had been made earlier that day by Sen. Dianne Feinstein (D-Calif.), who said the CIA had “violated the separation-of-powers principles embodied in the United States Constitution --SNIP-- An apology and an internal review board might suffice if this were Brennan or intelligence leaders’ first offense, but the track record is far from spotless. In 2011, Brennan...