Harry Truman famously kept a sign on his desk that read: "The buck stops here." ("Buck" is a disused term for "accountability," not money.) What Truman's phrase meant — it says a lot about the state of things that it needs to be explained — was that he, like the captain of a ship, accepted responsibility for everything that happened under his watch.
With Barack Obama, there's nary a buck to be found. To paraphrase the 1970 movie "Love Story," working for the United States government means never having to say you're sorry.
Days before Obama took office in 2009, Obama signaled that federal workers who break the law would have nothing to worry about. During his campaign he'd promised to prosecute the CIA and military personnel who tortured Afghans, Iraqis and other Muslims under orders from Bush and Cheney. People who voted for him expected him to follow through. The CIA torturers were worried sick. Their victims looked forward to seeing justice served.