HOUSTON — George Herbert Walker Bush had rolled down the long, gray-tiled floor of St. Martin's Episcopal Church in his wheelchair just eight months ago to mourn the death of his wife Barbara. But on this Thursday morning, it was the former president being carried, slowly and methodically, down the church's center aisle, surrounded by nearly 1,000 friends and family. Guests, packed shoulder-to-shoulder in the pews of the white-walled, high-arched church, wiped tears from their eyes as Bush's casket advanced toward the candle-lit altar...
