The benefits are actually skewed toward the middle class and poor. And you were earlier talking about the trade deficit specifically. Kind of fishy when someone changes their reasoning and maintains the same position.
Putting that aside, I don't think there are communities that have been "hollowed out" solely as a result of trade with China. We have seen shifts in the economy, with new industries rising up and old ones losing importance that have helped some communities and hurt other ones. If that's a genuine concern, I think the response should be A) stabilization policy (an overall strong labor demand goes a long way toward fixing that kind of thing), B) a strong safety net for the transition, and C) easier access to education. Also, one method that has really worked for some towns has been investing in higher education, which attracts a lot of new money (and skilled immigrants) to the town and creates a lot of secondary effects related to bunching up of high-skill people, but that's a local rather than national issue. Those are all things that the GOP actively fights against.