Sowell: "Heads I Win, Tails You Lose"

Any policy that shows any sign of achieving its goals will of course be trumpeted across the land as a success. But, in the far more frequent cases where the policy fails or turns out to be counterproductive, the political response is: "Things would have been even worse without this policy."
It's heads I win and tails you lose.
http://www.realclearpolitics.com/articles/2011/09/13/back_to_the_future_111307.html