WINTERSET, Iowa - Three generations of Clinton women hit the trail vowing "change across the generations" as Hillary Rodham Clinton stepped up her pitch to the women voters who could hold the key to Iowa's caucuses, which will launch the presidential nominating season in less than four weeks. "We're getting close to the caucuses," said Clinton. "I always think it's better to go to the caucuses with a buddy. Today, I've got some buddies with me." Those "buddies" included 88-year-old mother Dorothy Rodham and 27-year-old daughter Chelsea Clinton, making her first appearance with her mother on the trail in the...