I think if you REALLY want to end tribalism, increase the size of the House of Representatives and end gerrymandering. The House was capped to appease some whiners from rural America who decided to impede the census unless it was capped. Congress made the mistake of capitulating instead of busting heads,
The result is that the part of the Legislative Branch that represents big states/cities has been unfairly kneecapped, giving rural America power it was never supposed to have. Removing the cap would force the GOP to actually offer something to cities instead of going to the small towns and screaming that city people are evil, like they did with Antonio Delgado.(calling him a big city rapper)
Furthermore, it would motivate city dwellers to give a rat about issues in rural America.
Part of the reason a lot of city people don’t want to hear about the very real problems of rural America is that the political system is artificially tilted in its favor. Rural America, for all its problems with infrastructure, jobs and education system, has one major thing going for it: It plays politics on easy mode. With a defanged and heavily gerrymandered House of Representatives, not to mention states themselves, city dwellers basically have no power.
So when (to use an example) we hear about rural schools falling down because funding schools by property taxes is a stupid method of school funding unless you live in a ritzy suburb, we city dwellers are not as sympathetic and as inclined to work with rural Americans as we perhaps should be.
Our first thought tends to be something along the lines of, “ You could vote in politicians that could easily fix that problem in one session. Why is the fact you won’t do that *our* problem?”
By having an easy mode and the ability to do anything they want, rural America has been expected to go it alone for years. People lack sympathy and empathy for anyone on easy mode. People who have unfair advantages tend to find they get the cold shoulder when they face a problem they aren’t able to handle on their own.