STOCKTON, Calif. (AP) -- A sculpture honoring the contributions of millions of Mexican immigrant laborers who came to the United States more than 50 years ago, and who are still seeking to recoup some of their wages, was unveiled in Stockton. ``I'm very proud that people are finally showing interest in the work that we did,'' said Leopoldo Hernandez, 68, who began working as a ``bracero'' in Phoenix, Ariz. in 1957. Hernandez was one of millions of braceros, named after the Spanish word for arm, who came to the United States during World War II from Mexico to fill labor...