The Columbia River Treaty was signed by Canada and the US on 17 Jan 1961 after 15 years of preliminary investigation by the International Joint Commission, and one year (1960) of direct international negotiation. It dealt with the co-operative development of the Columbia River.
In 1989, Canadians David Spencer and Christine Lamont were jailed for the political kidnapping of a Brazilian businessman. From their prison cells they insisted on their innocence. Nine years later, after admitting their guilt, they were transferred to Canadian prisons and paroled.