There have always been breaches following these agreements, including the one the Conservative government signed with the European Union and the Trans-Pacific Partnership, which was initiated by the Conservatives and finalized by the Liberals.
I've often heard the Liberal party's Minister of Agriculture say that supply management was created by the Liberals, that they would not touch it and that they would defend it. I don't know whether they thought defending it meant that a few breaches, in 3% or 4% of cases, were acceptable. It appears that's been the case since they've solemnly committed to defending it. However, in their minds, it didn't mean defending it 100% of the time.
Now that a bill has been introduced on the subject, I'm hopeful we'll see an obligation to comply with the act. A motion, on the other hand, is just wishful thinking. So I hope the government honours the majority vote in the House.