Perhaps the most fitting tribute to Sen. Edward M. Kennedy came not from President Obama, who correctly called him one of the greatest senators in U.S. history, but from the man who lost last year's election: John McCain, the Arizona Republican, who was often the political polar opposite of his colleague from Massachusetts. Hours after Senator Kennedy lost his battle with a brain tumor late Tuesday, a tearful Mr. McCain called him the most effective member of the Senate - and nobody spoke to disagree. Both Mr. McCain and Sen. Orrin Hatch (R., Utah) agreed that health-care reform would be...