These right-wing House Republican extremists are going to cause another crisis, aren't they?

The Republican extremists killed the idea, leaving the scheme without enough votes. They are no longer interested in symbolic blows against the health law; there have already been scores of those votes. They actually think they can get the Senate, and ultimately the president, to approve the defunding of the health law — Mr. Obama’s most important achievement — by threatening to harm the nation and the economy.

This is pure delusion. Democrats are never going to undo the law, especially knowing the size of the self-inflicted wound Republicans would suffer if they really did force a shutdown or, far worse, a default. But the powerful forces on the right don’t care about reality. The Club for Growth, a conservative group, announced it would use its dreaded ratings system against any Republican who supported a continuing resolution that did not “defund Obamacare.”