If you pay attention you’ll see a couple of differences between what the EU does and what the US does. Your example is of a targeted tariff, directed at a specific industry, which is already present in the EU and that was deemed strategic. What it is not is indiscriminate, affecting all countries in the world and all industries with arbitrary rates that change every week.
Targeted tariffs have always existed, and the US and the EEC and then the EU were involved in a lot of trade skirmishes that did result in some barrier being put in place. This is not the same.
Targeted tariffs have always existed, and the US and the EEC and then the EU were involved in a lot of trade skirmishes that did result in some barrier being put in place. This is not the same.