DELANO, Calif. (AP) - Democratic Lt. Gov. Cruz Bustamante accepted the endorsement of farmworkers in California's gubernatorial recall election Saturday, and fended off criticism of his past involvement with a Mexican-American student group that opponents have labeled racist. The United Farm Workers union is among several groups that have endorsed Bustamante while opposing the recall effort against Democratic Gov. Gray Davis. "I'm proud to stand with United Farm Workers, who I have marched with shoulder to shoulder, the farmworkers who are the heart of the agriculture industry," Bustamante, the grandson of Mexican immigrants, told a cheering crowd of more than...