> They had the opposite effect, for reasons that still remain somewhat unclear.

It's clear that Russia redirected most of its exports. Just look at how much oil India is now buying from Russia — before the war, it was around 5%, and now it's over 40%. They rerouted a large part of their trade, created shadow fleets, and many EU exports still end up in Russia, but through proxy countries like Kazakhstan. (You can see this in the trade statistics between the EU and former Soviet bloc countries before and after the war.)

But the situation here is entirely different. The US has placed tariffs on much of Asia, the EU, and several other regions. There's nowhere for the US to reroute trade in a way that allows it to import the same goods at the same or lower prices.