I never understood this, I believe very strongly in the free market, but only where there is a free market. Of course you can let the free market run free up to the border of e.g. the US but surely it won't solve international trade since many countries do not have a free market. Unless we agree some international rules such that the boundary of the free market "sandbox" becomes the earths borders.

It's why I also think it is possible to hold a pro-free-market pro-tariff position simultaneously without contradiction. Tariffs could be used to "level set" manipulation from foreign governments and make the incoming goods behave as if they were not manipulated (thus also reducing the incentive to manipulate in the first place).

Not sure this is how tariffs are being used in reality.