Re: Non-optional consequences
Politicians do talk about getting jobs for their constituents. They will often exchange tax cuts for the promise of local jobs. (The promise is promptly forgotten, but not the tax cuts.)
The other non-optional consequence: Cheap labour overseas make goods sufficiently cheaper that people buy them and try not to listen about how that cheap labour is treated.
If you want manufacturing jobs you can start by lobbying for: no minimum wage, no limit on hours, no requirement to pay for overtime, no paid sick leave, no paid holiday, pay can be in company script that can only be spent in the company shop, no minimum age, working children do not have to attend school and all qualifications depend on satisfactory work experience. In fact, all of these can be yours as soon as you emigrate to the wrong country.