produce from mexican suppliers that get their products from these farms. these conditions have led some farm workers in the region to ask this key question. joining me now from san diego is los angeles times report richard morssi. richard, tell me what we need to know about the labor conditions that produce our produce? >> well, first thing that we have to emphasize is that most americans don't realize how much of our produce comes from mexico. more than 50% of the produce that we eat now comes from mexico. and they're produced at these megafarms that produce tens of millions of pounds of tom matat.