The Halibut Treaty was an agreement between Canada and the United States concerning fishing rights in the Northern Pacific Ocean. The International Pacific Halibut Commission was established by the treaty. The IPHC was a way for Canada and the US to jointly manage the Pacific halibut, which was in severe decline at the time. The commission had four members, but now has six, half Canadian and half American. The treaty also includes a closed season, so halibut are not fished during the more dangerous winter months. The treaty has been revised, mostly based on recommendations from a team of scientific researchers.
This was the first treaty Canada negotiated without Britain. Before this time, Canada always looked to Britain to ratify all international agreements they made. When Britain hear about the treaty, they wished to sign alongside Canada, like they had previously, but the Canadian Prime Minister, Mackenzie King resisted. He said that the treaty was only a concern of Canada's and the United States.