Canada would lose the ability to regulate ozone-destroying emissions or greenhouse gases. Free trade pushes all countries to the lowest common denominator in terms of environmental awareness. Safety Problems Let us say that Sweden decided to mandate side air bags and a 30 MPH crash safety test. The free trade associations could block them from doing that. The WTO would likely argue what Sweden is actually doing is attempting to favour locally manufactured automobiles.
Free trade wants all workers to be interchangeable.
Canada would be forced to accept doctors accredited in India or Africa without further training. The WTO would argue that further training is prejudice. Canada's strict gun laws would have to go, because they are an unfair restraint on sales of American handguns. The new rules allow corporations to sue countries if those countries do anything that would cause them to make less profit. For example, if Canada refused to sell bulk water to a Hong Kong company, that company could sue Canada for the amount of the lost profit.