ah, so you're a globalist....you should have just said soIt is all in how you frame it. Globalism nor Nationalism should be how you look at it, but rather history, and progress.
We are more connected now than ever before. Progress is accelerating. Going back to something that can never be again is irrational.
So hearing stuff that makes you feel good, for either side is a kind of delusion; just because someone promise you something, does not mean they will get it done. Mostly because business is a "globalized" prospect now, especially if you want to succeed and stay competitive.
If you want to see what an ultranationalist society looks like, look no further than North Korea. I doubt the "nationalists" in the US want to emulate them.