According to the US government’s International Narcotics Control Strategy Report (INCSR), opium, heroin, and marijuana seizures have decreased since Calderón began his drug war, and drug production in Mexico is on the rise. In 2008, according to the US State Department, potential heroin production reached 18 metric tons, up from 13 metric tons in 2006, as production of opium gum rose to 149 metric tons, from 110 metric tons.