Why do you assume that manufacturers are focused on serving American interests at all? As time goes on, our role in the global economy has been shrinking. This isn't because we've been chasing our industry out of the country, either. We are simply living in a world that is no longer dominated by U.S. industry in a post-WW2 period. The U.S. has 310+ million people. China and India alone have more than 2 billion. If I'm a manufacturer and I'm looking to build a factory closest to my customer base, am I building it in the U.S. or in Asia?
That’s fine. Then build in India or China. Just know that if you want Americans to buy your products, you have to pay a tariff to get them off your boats. It’s that simple.
That incentivizes American manufacturers to make those same products domestically. It’s free-market economics.