Thank you very much for your question, madam.
First, your question is based on the assumption that the mere fact that a government passes laws on social issues such as the environment, education or public affairs gives a company rights under a bilateral treaty or NAFTA where those laws have the effect of causing that company to lose money. However, that is not at all the case.
Under all these bilateral investment treaties and NAFTA, governments are entirely free to legislate on social, environmental, business and tax issues, in short in any field. These treaties do not at all encroach on the legislative jurisdiction of governments, whether it be the federal government or provincial governments. However, when they legislate, they must take their obligations toward foreign investors into consideration.
That does not mean that they cannot legislate in a way that will in effect impose costs on investors, but it does mean that they will impose costs in an arbitrary manner, utterly without reason. The obligation of a minimum standard of treatment for investors will then be violated. If governments legislate in a way that amounts to an expropriation of an investor's property, that's different. For example, an investor builds a plant, the government doesn't take over the plant, doesn't expropriate it directly, but it puts measures in place that make the plant utterly inoperable.