Oh okay, I was actually looking at citizenship. If you don’t care about being a citizen and just want to work, I can understand that’s an easier process.
I gotta disagree with the "just marry an American" advice; sure, it makes some things easier, but due to a paperwork mistake in 1979 or so my mother-in-law was almost deported two years ago after being married to an American and living in the US for almost forty years (the mistake was a date on a form that no one had looked at for those forty years...). Green card was still quite slow for my dad even though he married a citizen....
Sorry for the lack of clarification. Citizenship would actually come relatively quickly after holding the green card as per normal. I suppose around 5 years is the normal waiting period? You just have to pass a simple test where you memorize key value pairs like "Who wrote the Star Spangled Banner?" "Francis Scott Key"
However American citizenship is of extremely dubious worth, even if you really like to travel like my wife and are limited by travel visa paperwork like with a Chinese passport for example.
Voting is not a particularly useful feature of American citizenship unless you live in a swing state and believe your vote to be important in deciding the fate of our country.
And most jobs that require citizenship like in government pay extremely poorly and have ridiculous arbitrary barriers to entry, namely a security clearance.
