In regards to the sweeping police powers invoked during the G20 summit, the Toronto Police Chief points to the Integrated Security Unit, the coordinating authority established by the RCMP. The RCMP says it was “made aware” that the Toronto police might invoke the law, but “not consulted.”
The Ontario ombudsman’s report lays out a series of discussions between federal, provincial and municipal authorities starting at paragraph 117 and by that telling, it was federal legislation that was first considered.
It appears that the federal government’s reluctance to enter into an agreement under the Foreign Missions and International Organizations Act provided increased incentive for officials to look to the Public Works Protection Act. Under the federal Act, the RCMP appeared to have clear authority to construct and control the interior security barrier for the “red zone,” but the Toronto Police Service believed that unless it was somehow delegated power under that legislation, it would have to look elsewhere for incontrovertible legal support to construct and control the exterior security fence.