Democratic candidate Hillary Clinton criticized rival Barack Obama as a big dreamer with little substance on Wednesday as she sought to slow his momentum from 10 straight victories in the race for the party's U.S. presidential nomination. "We need to dream big, but you know, dreams alone won't make anything," Clinton said while courting Hispanics at a noisy rally in this south Texas town on the Mexican border. "We've got to have solutions to the problems that face us."
