THE MAIN DIFFERENCE BEING...:

Barack Obama won the presidency by exploiting a political environment that devoured George W. Bush in a second term plagued by sinking credibility, failed legislative battles, fractured world relations and revolts inside his own party.

President Obama is now threatened by a similar toxic mix. The disastrous rollout of his health care law not only threatens the rest of his agenda but also raises questions about his competence in the same way that the Bush administration's botched response to Hurricane Katrina undermined any semblance of Republican efficiency. [...]

Republicans readily made the Hurricane Katrina comparison. "The echoes to the fall of 2005 are really eerie," said Peter D. Feaver, a top national security official in Mr. Bush's second term. "Katrina, which is shorthand for bungled administration policy, matches to the rollout of the website." Looking back, he said, "we can see that some of the things that we hoped were temporary or just blips turned out to be more systemic from a political sense. It's a fair question of whether that's happening to President Obama."

Follow @brothersjudd