> Many countries have blanket global tariffs to make their own industries more competitive

Which countries are these? In general, if you look at the list of countries with >5% effective tariff rate, it’s all developing world. Vietnam, FWIW, has an effective tariff rate of a little over 1%, in a similar range to the EU and to the US pre-Trump II.

Some countries _do_ have high blanket tariff rates, but you’re generally talking about very poor countries with limited secondary industry; these are, as a general rule, not big exporters to the US. None of the US’s biggest trading partners have high tariffs.