It's one of the more interesting what-ifs of the past few decades. What would have happened if both George W. and Jeb Bush had won their gubernatorial bids in 1994? Which brother would have run for President in 2000 against Al Gore? Late in George W. Bush's second presidential term, I asked his father this question. The senior Bush shrugged, waving off the hypothetical. "Who knows?" he replied. "Didn't happen." Then, after the briefest of pauses, the 41st President added, "If Jeb wants his shot, he should have it. He's done the work, been a governor--a very fine governor, I...