Mr. Speaker, the point is that if once in its lifetime an animal has any of these prohibited substances administered to it, then that meat is no longer fit for human consumption, whether or not it is detectable according to the tests we use. The consensus is that roughly 85% or higher of horses in North America, in both countries, have at some point in their life been administered with these drugs. Once an animal is administered with these drugs, then at no point should that animal go into the food chain.
In the House of Commons on March 31st, 2014. See this statement in context.