In the health debate, liberals sing Hari Krishnas to the "public option" -- a new federal insurance program like Medicare -- but if it's good enough for the middle class, then surely it's good enough for the political class too? As it happens, more than a few Democrats disagree.

On Tuesday, the Senate health committee voted 12-11 in favor of a two-page amendment courtesy of Republican Tom Coburn that would require all Members and their staffs to enroll in any new government-run health plan. Yet all Democrats -- with the exceptions...