Canada

Canadian tariffs are targeted in a number of ways. One of the ways is targeting American goods that have Canadian alternatives. So the goal is to make American products less attractive by making them more expensive, damaging the US economy while bolstering our own.

I feel like it's often missed that it isn't a binary Buy US/Buy Canada dilemma. Most goods have substitutes - there are other countries that can produce most consumer goods. It's only when you start getting into high-value-added goods like turbines, flash memory, missiles and planes that there's difficulties in import substitution. A 25% retaliatory tariff doesn't mean your canned tomatoes are definitely going up by 25%, but you'll likely start seeing Mexican, Peruvian, etc. canned tomatoes on Canadian shelves that weren't there before.

And while patriotism is great and all, buying goods from other countries that we don't have strong established trading ties with is a good way to make the case for closer bilateral cooperation and even future free trade agreements that exceed most-favoured nation benefits conferred by the WTO. When countries start building export-driven industries that give dignity and economic self-sufficiency for their citizens, that's a future tiger worthy of negotiating a free trade agreement with.

Thank you for the response! I haven't seen a lot of specifics about the Canadian tariffs, but maybe I just haven't been looking in the right places. It makes a lot of sense to target particular items which have Canadian alternatives, and to put pressure on Red states as u/IslandLife mentioned below.

Edit: I was wondering why the word "Teriff" didn't look right. Apparently my phone decided that was the proper way to spell Tariff.