Aside from the war in Iraq, health care has been the most importantissue for the U.S. public in the early phase of the 2008 presidentialcampaign, ranking higher than both immigration and the economy.1,2Indeed, a majority of the U.S. population thinks that the federalgovernment "should guarantee health insurance for all Americans,"particularly children.2 Americans would be willing to pay highertaxes to make changes possible, although, like politicians,they disagree about whether participation in a national healthcare plan should be required and whether the government or privateinsurers would do a better job of providing coverage.2