Charles Krauthammer is a nationally syndicated columnist.

‘Unprecedented”? Judicial review has been the centerpiece of the American constitutional system since Marbury v. Madison in 1803. “Strong majority”? The House has 435 members. In March 2010, Democrats held a 75-seat majority. Obamacare passed by seven votes.

In his next-day walk back, the president implied that he was merely talking about the normal “restraint and deference” the courts owe the legislative branch. This concern would be touching if it weren’t coming from the leader of a party so deeply devoted to the ultimate judicial usurpation — Roe v. Wade, which struck down the abortion laws of 46 states — that fealty to it is the party’s litmus test for service on the Supreme Court.

Obamacare passed the Congress without a single vote from the opposition party – in contradistinction to Social Security, the Civil Rights Act, the Voting Rights Act, Medicare, and Medicaid, similarly grand legislation, all of which enjoyed substantial bipartisan support. In the Senate, moreover, Obamacare squeaked by through a parliamentary maneuver called reconciliation that was never intended for anything so sweeping. The fundamental deviation from custom and practice is not the legal challenge to Obamacare but the very manner of its enactment....