International bridges are a federal jurisdiction, which means that the federal government, Parliament, can basically govern every action that relates to it in the way that Parliament deems appropriate.
This motion has to do with the interplay between provincial and federal legislation. As I read it and understand the intent, the impact would be that in fact all this legislation would not prevail over provincial legislation. In other words, provincial legislation pertaining to international bridges would prevail over a provision in federal legislation that would say the contrary. That's my understanding.