One of the most recent slideshows by Chico Sanchez is The Way North, which documents the plight of the hundreds of people from South and Central America as well as Mexico's poorest regions who pass through La Lecheria, a small factory town just outside Mexico City, on their way to the borders of the United States.
Chico Sanchez is a freelance photographer based in Mexico City. Chico worked in Venezuela, collaborating with Reuters, European Pressphoto Agency, Agencia EFE, and freelances for various newspapers and magazines.
Many of Chico Sanchez's documentary/travel photography slideshows have been featured on The Travel Photographer blog and can be found here.
A number of photographers, some of whom attended the Foundry Photojournalism Workshop in Mexico City in 2008, have documented La Lecheria. In fact, a project produced by one of the participants in my Multimedia class was on the same subject.
You can see my own slideshow Los Migrantes about the migrants who pass through La Lecheria.