It's not a question of hurting Canada's desire for family reunification. It's a question of enforcing the law. What you're going to have to do is give CBSA the proper tools and proper budget in order to be able to investigate complaints from people who complain about being duped, or being forced into arranged marriages that they didn't want, just for the purpose of immigration, etc.
The problem right now is that there are no resources for these people to seek redress. The financial cost and the human cost and the humiliation that these people suffer is enormous, especially in many communities, because they end up with having to spend hundreds of thousands of dollars in some cases, and also being responsible for the sponsorship. It's just terrible. There has to be a way to redress.