Set aside Joe Wilson’s bad manners — what about the substance of his accusation? 
 
Mr. Wilson claims that various Democratic proposals wending their way through Congress will use U.S. taxpayer dollars to further subsidize health care for illegal immigrants. Democrats say this is not true, and the back-and-forth continues like this: Democrats say that there is nothing in pending legislation that explicitly covers illegal aliens. Republicans say, “Aha! But we offered amendments that would have specifically required more robust measures to keep illegals out of the system and you voted them down, leaving the back door open!” And Democrats respond, “No, we didn’t. We don’t need that, because Medicare and Medicaid and such already require documentation of legal status.” And then the Democrats will point to this report from that solomonic arbiter of fact, the CNN Truth Squad, which concludes: “A new report finds the bill could require illegal immigrants to buy coverage, but it clearly restricts subsidies to U.S. citizens and legal residents.” 

As Sarah Palin, critics of Van Jones, and those who seek to exclude Cass Sunstein from the collective czardom of the Obama administration have pointed out, there’s what the law says and there’s what the administrative apparatus does. When it comes to the question of whether government-run health-care programs will be used to subsidize illegal aliens, we need not confine ourselves to the realm of the hypothetical and the speculative. Helpfully, the government itself has taken a look at the issue from time to time.