In 2007, US authorities seized a total of 1 kilogram of cocaine and heroin on the US-Canada border.
In 2009, the amount of illegal drugs seized by US security personnel increased to 18 kilograms of cocaine and 28 kilograms of heroin.
In addition to heroin and cocaine, marijuana seizures increased. In 2007, 2,792 kilograms of marijuana was seized on the northern border. In 2009, 3,423 kilograms was seized.