Sustaining the Borderlands in the Age of NAFTA provides the only book-length study of the impact on residents of the US-Mexico border of NAFTA's Environmental and Labor Side Accords, which required each state to enforce labor and environmental regulations. Through field research in Matamoros, Tamaulipas, anthropologist Suzanne Simon tests the premise that the side accords would encourage Mexican grassroots democratization. The effectiveness of the side accords was tied to transparency and accountability, and practically bound to opportunities for Mexican border populations to participate in the side accord petitioning and civil society input mechanisms. Simon conducted sixteen months of fieldwork with both a group of environmental activists and a group of those fighting for labor justice in Mexico. Both of these groups became enmeshed in the types of cross-border advocacy networks and coalition building efforts that are typical of the NAFTA era.