. >> pitts: norma flores lopez isn't so sure of that.e works for the association of farm worker opportunity programs. it provides training and education to farm workers nationally. she'd like to see children out of the fields through changes in the law. >> norma flores lopez: we still believe in the value of kids growing up and learning how to be able to earn money. but we feel that at the age of 12 is really, really young, the same way we feel that the age of 12 is really young in any of the other industries. >> pitts: a century ago, child labor in the u.s. was commonplace, from sweatshops and factories to mines. the fair labor standards act was passed in 1938. it took children under 16 out of most workplaces for their safety and welfare. the one exception was agriculture. back then, most farms were small family operations and child labor was considered necessary. today, the number of children legally working on farms is only guessed at. the u.s. department of labor says it might be as high as 155,000. >> frank gasperini: we don't advoc