It's not that companies don't want to trade China's much lower production costs for the US. It's also that, because the increase in costs reduces sales, increases risks and takes away competitiveness and innovation.

But the real problem is that Trump doesn't maintain the same policy for 4 days in a row! How can any investor decide to set up a factory in the US like that? In 4 days, it's not even possible to buy the land for the factory. And if he had bought it, he wouldn't start construction until he knew what the situation would be like in 90 days.

And Biden left unemployment at just 3.5%... There are simply no workers available in the US. Are they going to hire immigrants to keep wages low?