"How have Canada and other jurisdictions reacted to the recent emergence of nanotechnology-based products in the marketplace (and what is the current state of affairs)?"
That was the question that the Carlton University Regulatory Governance Initiative posed. To answer it, Jennifer Pelley and Marc Saner produced "International Approaches to the Regulatory Governance of Nanotechnology", which examines how Canada, the United States, the United Kingdom, the EU, and Australia, arrived at their regulatory policies affecting nanotechnology, summarizing the policy papers that informed those decisions, and looking at the external pressures on those governments from industry, unions, consumers, etc.
The report makes for very dry reading, but its a good reference source and worth reading. Just make sure you have a large cup of strong coffee nearby.