Hillary Clinton and Barack Obama agree on most policy issues, but that makes their rare differences all the more revealing. To wit, their running scrap over Mrs. Clinton's "individual mandate" for health care, which Mr. Obama has now had the nerve to expose for its inevitable government coercion.

Mrs. Clinton's proposal requires everyone to buy health insurance, along with more insurance regulation, a government insurance option for everyone and tax hikes. Mr. Obama likes all that but his mandate would only apply to children. He argues that the reason many people aren't insured is because it's too expensive, not because they don't want it. Mrs. Clinton counters that coverage can't be "universal" without a mandate.

But then Mr. Obama had the impudence to defend his views. His campaign distributed a mailer in key primary states that claimed the Clinton plan "forces everyone to buy insurance, even if you can't afford it." It also featured an image of an anxious couple at a kitchen table. The Clinton apparat went apoplectic, claiming the flyer evokes the famous "Harry and Louise" commercials. A common article of liberal faith is that this "smear campaign" doomed HillaryCare in 1994 -- as opposed to, say, its huge cost and complexities. But never mind.

Yet if Mrs. Clinton's plan is better because it has a mandate, how does it work in the real world, where some people still won't be able to afford insurance, or would decline to acquire it? At a recent debate, the Illinois Senator drove the point home, asking Mrs. Clinton, "You can mandate it but there will still be people who can't afford it. And if they can't afford it, what are you going to fine them? Are you going to garnish their wages?" And in an interview with ABC's George Stephanopoulos on Sunday, Mrs. Clinton conceded that "we will have an enforcement mechanism" that might include "you know, going after people's wages."

Well, well. In other words, HillaryCare II isn't all about "choice," but would require financial penalties for people to pay attention, including garnishing wages. To put it more accurately, the individual mandate is really a government mandate that requires brute force plus huge subsidies to get anywhere near its goal of universal coverage.