They will go with automation instead...
Well, maybe in the foreign plant where they have already moved their manufacturing.
My business would simply come to an end without foreign imports, because our products are no longer manufactured in the the USA in any significant quantities. Therefore a higher tariff on, say Chinese goods would simply lead me and many other American small business owners to shut down. Manufacturers would take years to move production back on shore even if their costs suddenly went way up and the USA looked attractive again.
We made this mess over a long period of time, and it's going to take a long period of time to work our way back out of it. A trend toward less taxation and regulation in all forms would be better than trying to punish people and countries we are mad at in the short run.
Or,
They could just produce their products in the US?