THEIR OWN WORST ENEMIESFrank Rich lays down the challengehttp://www.nytimes.com/2010/01/24/opinion/24Rich.htmlTuesday’s special election was a dire omen for this White House. If the administration sticks to this trajectory, all bets are off for the political future of a president who rode into office blessed with more high hopes, good will and serious promise than any in modern memory. It’s time