The Republican Party...

...may no longer be a normal party, according to David Brooks. He writes in the Times this morning (my emphasis):

Over the past few years, [the GOP] has been infected by a faction that is more of a psychological protest than a practical, governing alternative. The members of this movement do not accept the logic of compromise, no matter how sweet the terms. If you ask them to raise taxes by an inch in order to cut government by a foot, they will say no. If you ask them to raise taxes by an inch to cut government by a yard, they will still say no.
 
The members of this movement do not accept the legitimacy of scholars and intellectual authorities. A thousand impartial experts may tell them that a default on the debt would have calamitous effects, far worse than raising tax revenues a bit. But the members of this movement refuse to believe it.

The members of this movement have no sense of moral decency. A nation makes a sacred pledge to pay the money back when it borrows money. But the members of this movement talk blandly of default and are willing to stain their nation’s honor.

The members of this movement have no economic theory worthy of the name. Economists have identified many factors that contribute to economic growth, ranging from the productivity of the work force to the share of private savings that is available for private investment. Tax levels matter, but they are far from the only or even the most important factor.
 
But to members of this movement, tax levels are everything. Members of this tendency have taken a small piece of economic policy and turned it into a sacred fixation. They are willing to cut education and research to preserve tax expenditures. Manufacturing employment is cratering even as output rises, but members of this movement somehow believe such problems can be addressed so long as they continue to worship their idol.
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If the debt ceiling talks fail, independents voters will see that Democrats were willing to compromise but Republicans were not. If responsible Republicans don’t take control, independents will conclude that Republican fanaticism caused this default. They will conclude that Republicans are not fit to govern.

And they will be right.