Where do you think challenges to Free Trade / NAFTA originate from?

The Congress is not our friend. Should Trump manage to tilt an already lopsided deal even further in United States favour, expect Congressional support. While Congress may not favour outright abrogation with the attending loss of unprecedented access to our market and invasive incursion of our sovereignty; Congress is not looking for a fair deal and backs 100% America First. (* see American infrastructure policies)

Is our Parliament looking out for Canada and Canadian citizens interests?