We're in the midst of a great four-year national debate on the size and reach of government, the future of the welfare state, indeed, the nature of the social contract between citizen and state. The distinctive visions of the two parties — social-democratic vs. limited-government — have underlain every debate on every issue since Barack Obama's inauguration: the stimulus, the auto bailouts, health care reform, financial regulation, deficit spending. Everything. The debt ceiling is but the latest focus of this fundamental divide. The sausage-making may be unsightly, but the problem isn't that Washington is broken, that ridiculous cliche. The problem...