Your linked source is a completely different issue, which is that there are other tariffs designed to artificially limit trade. These are de facto quotas on trade.

If it isn't in reference to what ceejayoz linked to... what tariffs are you talking about?

A link would be great, but you can just name the products if that's easier, and I'll look up the data.

If you don't like my source - which appears to be very close to your claim - I would encourage you to provide your own.

I didn't downvote your comment above. But I think you might be interested to watch this one (of course, the video is made by a Canadian YouTuber, but I think he can back up his claims in the video from what I observe): https://www.youtube.com/watch?v=9ZvDhayPHxs&t=471s