There is some motive to use the stick to motivate industries - after you have shown them a carrot.

It’s like if you see a child has abusive parents, so you just drain the bank accounts of those parents, and nudge to the child “Hey, you should look for new parents”.

Look at Biden’s Inflation Reduction Act. He actually encouraged growth of solar production in red states so that clean energy could actually become a profitable industry here. Once that went into full swing, THEN tariffs on Chinese panels would make sense.