A film report of the 1969 protest demonstration by the Mohawk nation of the St. Regis Reserve on the international bridge between Canada and the United States near Cornwall, Ontario. By blocking the bridge, which is on the Reserve, and causing a considerable tie-up of motor traffic, the Indigenous activists drew public attention to their grievance that they were prohibited by Canadian authorities from duty-free passage of personal purchases across the border; a right they claim was established by the Jay Treaty of 1794. The film shows the confrontation with police, and ensuing action.