as a scar on the land. gary tuchman, cnn, nogales, arizona. from the border to the training room, a look at the video for arizona cops, what they are learning about enforcing this new law that critics say will lead to racial profiling. supporters say that simply is not true. we have an upclose look. plus you've heard that many immigrants are doing jobs americans won't. is that true? gary tuchman did some grape picking in the fields of california. you know, when i grow up, i'm going to own my own restaurant.