To add to Vivek's list of things some of the things would never change.....even if u r a citizen (at least not in our lifetime)....
1)Ur skin color, speaking accent/slangs, visible eating habits (work place), cultural/religious/festival participations etc. will show u as standing out but will show u as being "different". This is not to imply that u should change urself for that.
2)Speaking of asians (and those from India in particular), US senate still doesn't have any representation except for back-office genius boys (heard of Bobby Jindal).
3)In a country like USA, where everything is for selling/business/price (including influences and your voice), unless that starts happening, there will be a ? on ur identity.
4)One more theory, which I am holding as mine unless people claim their own rights to it (which I am happily willing to share, but not loose): Since 1776, none of USA presidents has been non-British/non-Irish origins. Blacks r top minority here. By some estimates, chances of a black becoming a president r almost neglible. Think of others!!!
5)I am digressing here but my point is, in USA, u have to prove ur worth to be identified.
6)Not only politics, elsewhere too there is always a Glass Ceiling (corporate world is a worthy example).
7)In exceptionally adverse times, US won't care if ur an H1B/GC/Citizen or who do u love more, US/ur mother land. It will kick/isolate u out. Remember: Jiski Laathi, Uski Bhains. Their rulings wil defy ur arguments howsoever legitimate those be. Though I'd try to be the last person to accept such behavior, but can I help it? I don't think so.
8)Not the last or the least, this is a land of immigrants. Those who came early have clear advantage. U can prove ur worth but will have to work several magnitudes harder and decades to catch up. It asks for sacrifices and determination.