

The reason Trumps idea appeals to people for those unaware is that free trade destroyed a lot of union jobs, which were outsourced to emerging markets. After the industrial revolution unions fought for worker rights and salaries, and they were then shipped away to places that didnt have those rights, and they want to see a reversal of this.
Not sure if its right or wrong, but you cant fault them for holding out hope, its actually a left wing ideal I would say, large government protectionism interfering in the free market. Saying that all factory jobs are bad is a silly retort, there are many factory jobs in the US already that people are happy to have; even ASML making advanced semiconductor fabs is a “factory job”.
China produces the bulk of rare earths the US uses for things like military production, which puts the US as dependent on China as Canada is dependent on the US. The reality is absurd no matter which way things go.
Europe is doing carbon border adjustments to attempt to do something similar if I’m not mistaken, though its still early stages.