It appears to be a deterrent in the form of a non-retrospective tax penalty on specific U.S. products that are produced as a result of moving existing factories abroad at the expense of those American workers.
Sure, that's how the increasingly desperate surrogates are trying to spin it. However, Trump said:
When I'm president, if companies want to fire their workers and move to Mexico or other parts of the world there will be a tax of 35 per cent for any product they want to ship in to this country.
The only practical way that can work is via a general import levy. Not to mention the fact that Trump has previously promised an import levy on all Chinese imports
and import tariffs on other goods
If it's not
a general import levy, then it's even more catastrophically stupid. How do you define "existing product"? What if Ford stops building the Ford Tin Box and produces a new model elsewhere? Is that an "existing product"? If not, where is the dividing line? It basically guarantees that all manufacturing will move outside of the US, which is completely the opposite of the intended effect.
Trump quite clearly doesn't understand economics and his proposals would hurt the poorest people.