That's possible, but I think governments will be cautious about it.
The people from the Union des producteurs agricoles and the Canadian Federation of Agriculture have put enormous pressure on all members, insisting that they really want this bill. I don't think farming people would be happy if it were passed and subsequently contradicted by another act. The risk to any party in power would be very great.
However, I must say the Liberals have a tendency to change statutes as they go along. I agree with you on that point.