Hey trish, I think the song's intended to be narrated from the point of view of the vietnam vet character rather than Bruce himself - and the Born in the USA lines are more a bitter refrain from that character than a flag-waving fistpump. I always think of it like that last scene in The Deer Hunter if you've seen it when the vets come back all fucked up and scarred and sing 'God Bless America' in the bar. I know Bruce turned down advertising offers from the likes of Chrysler and denounced Reagan when he wanted to harness it for those kind of nationalist purposes.
There's an acoustic demo of it that he did before the album that's much closer in spirit to what I think the song's meant to be about - and I think you might actually quite like it:
Born In The USA Acoustic
In fact right before this big bombastic 80s overproduced stuff he did a great album right at the other end of the spectrum. It's called
Nebraska and was done at home with just a four track, acoustic guitar, harmonica and some reverb/echo effects. I don't know if you're already aware of it, but again it's certainly worth listening to at least once as it may change your perception of Springsteen a little. I know you liked the harmonica on one of my songs a while ago and I think the title track has some of the best captured/played harmonica I've heard - great tone, playing and a nice reverb balance. I'd recommend maybe giving that song and 'State Trooper' off the album a play on youtube and seeing what you think. You may still hate it all mind, but...