The US has a huge internal market. But their reliance on international trade is small. Exports amount to less then 10% of their GDP [1]. As a comparison, France has the lowest amount of exports per GDP in the EU, and theirs is almost 30%. Germany's is 47%. For many smaller EU countries, it's even higher [2]. The US cares a lot about keeping international shipping lanes open (mainly because they used to rely on imported oil). But they are very protectionist, and always have been. International trade is just not that important to them. [1] https://www.statista.com/statistics/258779/us-exports-as-a-p... [2] https://data.worldbank.org/indicator/NE.EXP.GNFS.ZS?end=2021...