I guess mine could fall into this category. Red Typhoon Arc: 4912. Basically you save the US, and the world from a nuclear Holocaust from N. Korea and China.
MA Arc:
Red Typhoon 4912
Akhdar Blood Arc: 247198
The third arc listed in my sig is sort of "Fourth of July-y" in the fireworks aspect of the story and battles. 
It's a lot of fun too if I may say so myself - not because of anything I did with it* but because the multi-exploding drones and hoverbots are just a [u]lot[u] of fun, I think. I end up playing it every time I log in since I made it.
*please note that it's not a wordless "go. hunt. kil skuls" AE lame-osity either though; those things depress me
Well I don't know, but I guess you could try "Of Liberty and State" since the story is about Ms.Liberty and even touches on it's meaning. Also with Statesman being a key figure in it, I guess you could say it's a bit patriotic.
Part 1 : #218636
Part 2 : #218638
Part3 : #218648
So.. are there any more out there? Seems a good holiday to save the USA and put on the patriotic colors.
O