Why is that the best option instead of raising wages until those jobs are attractive to domestic workers? There's this weird back and forth where people bemoan stagnating wages for the working class but at the same time cheer on importing labor that is willing to work for those stagnant wages.
In any other market, the balance of supply and demand is reflected in the price. But for the labor market the perpetual solution put forward seems to be juicing the supply side so that the price does not move up to a new equilibrium.
Who is pushing to raise the wages and power of labor? It sure isn’t the party that is pushing tariffs and the return of factories.
Both would have to happen. There's very little slack in the labor market to absorb anything. Even if legal permanent residents take up manufacturing jobs, they'd have to give up whatever jobs they have now creating a shortage. And given then even most undocumented people are working, someone needs to fill those jobs.