Heroin Trafficking and Seizures in the Americas, 2012
"According to the United States, in 2012, the availability of heroin continued to increase in that country, likely due to high levels of heroin production in Mexico and Mexican traffickers expanding into 'white heroin' markets.117 Some metropolitan areas in the United States experienced an increase in heroin overdose deaths. Apart from heroin originating in Latin America, heroin from South-West Asia may be reaching the North American market in larger quantities. Canada, which continues to identify Pakistan and India as being among the prominent countries of provenance for heroin reaching its market, mentioned an increase in the number of heroin seizures from couriers on commercial airlines in the latter part of 2012 and in early 2013, and reported that this could be due to a resurgence in the use of heroin across Canada, as well as possible export to other countries, such as the United States.118 However, the United States has not reported a significant flow of heroin from Canada. India and the United States both indicated that there was a flow of heroin from India to the United States; it is plausible that the flow of heroin reaching North America from India, while probably still small in relation to the size of the North American consumer market, is of South-West Asian origin (as discussed above).
"In Latin America, despite illicit cultivation of opium poppy in some countries and the manufacture of heroin in Colombia and Mexico, destined mainly for the United States, the prevalence of opiate use is relatively low. South America, Central America and the Caribbean collectively accounted for less than 3 per cent of global seizures of heroin in 2012."
United Nations Office on Drugs and Crime, World Drug Report 2014 (United Nations publication, Sales No. E.14.XI.7), p. 31.