Robert Samuelson: Medical spending threatens everything else, including our future. This is very depressing.

President Obama's critics sometimes say that he is engineering a government takeover of health care or even introducing "socialized medicine" into America. These allegations are wildly overblown. Government already dominates health care, one-sixth of the economy. It pays directly or indirectly for roughly half of all health costs. Medicine is pervasively regulated, from drug approvals to nursing-home rules. There is no "free market" in health care.
What's happening is the reverse, which is more interesting and alarming: Health care is taking over government. Consider: In 1980, the federal government spent $65 billion on health care; that was 11 percent of all its spending. By 2008, health outlays had grown to $752 billion -- 25 percent of the total, one dollar in four....

Obama's health-care proposals may be undesirable (they are), but it's mindless to oppose them -- as many Republicans do -- by screaming that they'll lead to "rationing." Almost everything in society is "rationed," either by price (if you can't afford it, you can't buy it) or explicit political decisions (school boards have budgets). Health care is an exception; it enjoys an open tab. The central political problem of health-care nation is to find effective and acceptable ways to limit medical spending. 

Democrats, Samuelson says, are no better.