The 15 Locks That Give Canada Leverage Over the US Economy

By The Decision Room

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13 of the 15 locks on the St. Lawrence Seaway — the front door to America's heartland — are owned and operated by Canada. America owns two. And they sit in the middle of a Canadian-controlled river. The Seaway is a 3,700 km marine highway lifting ocean ships 557 feet — the height of a 60-story building — from the Atlantic into the Great Lakes. It's the reason Duluth, Minnesota is a seaport. Eight U.S. states, 100+ ports, ~3,000 ships and 36 million tonnes of cargo a year, supporting some 237,000 jobs and $35 billion across both countries. Midwest grain, iron ore, steel — all of it passes through gates with a Canadian hand on the handle. How did Canada end up owning the door? Because America refused to build it. For 60 years, Congress blocked the Seaway. In 1951, Canada's PM told Truman: fine — Canada will build it ALONE. That threat broke the deadlock. And during negotiations, President Eisenhower taunted Canada that it would be better off as the 49th state — the exact same annexatio

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