drag their sorry asses through middle America to see the seeds they have sown
It is really, Really, REALLY hard to convince the people who believe in Free Trade. They were taught the theory in school. Often they were taught it or had it reinforced in Comm school while getting an MBA. I had an argument about this with somebody taking Comm school while I was an undergrad. This was back in the 90s, when Perot was running. It was all "why should I listen to an undergrad. What do you know?" and I was like, "our grandchildren are going to hate us". It looks more like our children will hate us. I had no idea how fast it would happen.
Finally, a lot of these guys are doing well for themselves. Even if they see other people doing badly, they still buy into the "they're just not working hard enough and smart enough" meme. It's waaaay too easy to believe something when you're paid to believe it. The people who are doing well are often paid to believe in Free Trade.
Finally, the middle class can indeed get a temporary boost from Free Trade. It's the macro economic version of selling your house and using the money to take trips and throw parties. We sell our production capability, the middle class gets $20 microwaves at Wal Mart for a few years, while ignoring the relatively small number of people who used to work at the microwave factory. Then, we cut another trade deal.
Eventually we run out of new trade deals to cut, just as you run out of possessions to sell. Then the party is over.