Two of the checks and balances on Waterfront Toronto activities were explicitly asked for by the City of Toronto and the Province of Ontario. One was that the Province of Ontario be the controlling legislator on this. In other words, you are a creature of the province, because you're a product of provincial legislation, not federal legislation. Two, the City of Toronto refused to surrender final say on all planning and infrastructure investments.
On February 21st, 2019. See this statement in context.