Madam Speaker, there are a lot of questions around the science and testing of THC. For example, people are at a concert and many are smoking marijuana. Individuals nearby, even though they are not smoking marijuana, may absorb that into their system. Under this bill, those people could potentially be pulled over in their cars and tested only to find that THC is in their system even though they did not smoke any marijuana. How would that be dealt with? That is my big question and it is a big concern on a lot of people's minds.
In the House of Commons on May 31st, 2017. See this statement in context.