We can't bring the manufacturing jobs back for these people, either. Let's dispel the notion that the collapse of manufacturing jobs in the rust belt, where many of these people live, was the result of political choices. It was inevitable -- the rise of China, southeast Asia, and Latin American countries has revealed the truth that US manufacturing was not globally competitive, but merely sheltered. NAFTA sent some jobs to Mexico, but in the absence of NAFTA, those jobs would have gone to Asia instead. If the US government had decided to protect US manufacturing jobs at all costs, we would have quickly learned what "all costs" means -- the cost of protecting those jobs would have risen quickly over the years until we could not have afforded it anymore. The tariffs required to do so would have been an enormous drag on the economy, and on the well-being of most Americans, and therefore unsustainable economically and politically. So the political choices involved in the collapse of manufacturing jobs could at best have delayed the inevitable.
So, whatever we can do for these people is by degrees -- improve the free public education they already have, improve the welfare benefits they already have, maybe cut their taxes, if they earn enough to pay taxes. We can't bring the jobs back, and it's naive of them to believe candidates who promise that they can.
But maybe we shouldn't feel sorry for these people, who grew up in the richest country in the world, with free education, and have nothing to offer to anyone. A lot has been done for them already, and unlike almost any other group in this country, they cannot point to any injustices visited upon them as an excuse for their current state of affairs. Let's keep in mind that they were never enslaved, and that they were sheltered from competition from non-whites and foreigners for decades. They have managed to fail in a country designed to promote the success of white people, often at the expense of other groups. Their lives are significantly better, more comfortable, and more secure than those of people in many countries of the world. Billions of people live in poverty these poor white Americans could never imagine. These Americans have housing, enough to eat, clothes to wear, cars, TVs, video game consoles, government-provided health care (Medicaid) and welfare payments in many cases -- all the trappings of middle-class life in many parts of the world. What else do we owe them? Self-actualization?
Frankly, I'd rather give my money to some of the billions of people in the world who live in ramshackle houses with dirt floors, no electricity, no education, and no way out. These white Americans have enough that I don't see how they are entitled to any more unless they earn it themselves.