A Head Start

I don't know anyone who's in a hurry to start the 2016 presidential campaign, including the men and women who hope to be President. But I'm always curious to hear what our editor at large David von Drehle makes of the new tribes, old feuds and sudden plot twists that shape the pageant of American politics. In a recent editorial meeting, he started talking about the challenge facing anyone in either party looking to block Hillary Clinton's road to the White House, and I wanted to hear more. David makes a persuasive argument that Clinton doesn't need to declare a candidacy...