“The roots of the War on Drugs go deep in Mexico. In fact, in some ways, they are deeper there than in the United States,” explains historian Isaac Campos in the most recent issue of NACLA. In order to better understand the forces behind drug prohibition in Mexico, NACLA spoke with Campos, who discussed the recent NACLA article, his forthcoming book, and his experience covering marijuana, prohibition, and drug culture in Mexico and the United States.