Democratic leaders in the White House and on Capitol Hill have only recently begun to take seriously the internal divisions within their own party.

Frankly, I am stunned that they would be caught off guard by this. How could they not have anticipated this? How could they possibly have been surprised that the left and right flanks of the party would not see eye to eye?
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It's almost as if the President has absolutely no experience in dealing with the United States Congress whatsoever.

That's so puzzling, considering how Democrats turned down the fresh-faced newcomer who could turn a good phrase on the campaign trail for the old-hand who had been in Washington for 15 years by the time of the nomination battle. Oh wait...