US pulled out, started a new one called USMCA - which no doubt favours the USA.
Haven't read it yet though. Probably has an anti-China clause though (no doing business with anyone that buys from China) as a penalty tariff, as a guess.
No idea if this is true or not, but I will agree with the 30,000 different ridiculously complex parts that are sourced from all corners of the planet.