Mr. Speaker, it is a similar situation. There is a great concern now about people on work sites who might be impaired. However, if we use these methods for testing the blood levels of THC, it will show that the people who use marijuana regularly are impaired when they are not and are totally capable of doing the work. Therefore, we have to come up with new ways of testing impairment to look at this problem. The method we use for alcohol will not work at all.
In the House of Commons on November 21st, 2017. See this statement in context.