Robert Samuelson sets out a key problem with our welfare state in his latest Newsweek column:

In theory, expanding public welfare could offset eroding private welfare. President Obama’s health-care proposal reflects that logic. The trouble is that the public sector also faces enormous cost pressures, driven by an aging population and rising health costs. The Congressional Budget Office projects the federal debt to double as a share of the economy (gross domestic product) to about 80 percent of GDP by 2019.

Any sober examination of figures like these suggests that the system has promised more than it can realistically deliver. We are borrowing not to finance investment in the future but to pay for today’s welfare?present consumption. Sooner or later, the huge debt will weaken the economy. Nor would paying for all promised benefits with higher taxes be desirable. Big increases in either debt or taxes risk depressing economic growth, making it harder yet to pay promised benefits.

The U.S. welfare state is inevitably weakening; insecurity is rising. The sensible thing would be to decide which forms of public welfare are needed to protect the vulnerable and to begin paring others.