We are often questioned about green card holders working here in Mainland China for US firms and while there is a lot of misinformation floating about it, the rules are rather simple.  If you have a green card, then you are the same as a US citizen for purposes of US taxation.
 
From: IRS Publication 4588 on green card holders living abroad
 
"If you have a US green card, you are a lawful permanent resident of the US even if you live abroad.  This means you are treated as a US residnet for US income tax purposes and you are subject to US tax on your world income from whatever source derived.   Accordingly, you must file a US return unless (a)  there has been a final administrative or judicial determination that your lawful permanent resident status has been revoked or abandoned, (b) your gross income from world wide sources is less than the amounts that require a tax return to be filed or (c) your US residence status is affected by an income tax treaty."
 

About twenty years ago, while living in Amsterdam as a graduate student, I was lucky enough to find an apartment in the Jordaan neighborhood right next to the Westerkerk.  It is the place Rembrandt is buried and is right next to the Anne Frank house.  I often watched the tourists line up for a tour of the Anne Frank house out my kitchen window when having a morning coffee.
 
Studying international law, great apartment, Europe was turning inside out as the EU was forming and the Russians were just about to shell their own Parliment building.  Occassionally, I would have to pinch myself to be sure it was all real -- for the world was changing so fast -- and my fellow students and I were right in the middle of it and -- well, it could not be cooler if we dreamed it up as a stage play.
 
And then I called a contractor to paint and fix up the apartment.
 

We recognize that foreign enterprises doing business here in Mainland China often have intellectual property protection and trademark enforcement issues.  However, there is a safe way to do business here – by recognizing that the Chinese legal system operates differently from any other developed economy.

That which does not kill us makes us stronger.  Well, I'm not sure if being here long enough to be opening year ten has made us any stronger, but it certainly not killed us yet.
Now, I have often been quoted as saying to clients, keep your arms and hands inside of the moving vehicle at all times because living and working here is often a bit like a roller coaster.   But there has been nothing like a near death experience.  Except for that whole pesky situation where we were deported for a week.   The upside there was a family vacation in Hong Kong, so, no harm no foul.
And on the up side, we have been able to see the WTO come into being here, followed by each sequential ramp up on the ten year commitments China gave as a developing economy. Manned space flight, the Olympics, the World's Fair, the Asian Games.  Umm.  I guess they got over that 3rd world country label.  Developing economy, my ass.

Rather than explain the details of Hugh's latest comments on Gapingvoid, both for their colorful language, but also because I can not say it better than he has, I'll leave it to him to explain why America is still really in pretty good shape.  I'll link to it here and here, "American isn't f****d" to let you read the pearls he's strewn about on his site.  Basically, we are only as screwed as we think we are.  And I say we're not...and when it comes right down to it, what other choice do we have? And if you understand why we, as Americans are not screwed, then you are already ahead of the game.  If you already think we're screwed, then it's been nice knowing you.

Nobody that has ever met me, or even heard about me, has ever called me a panda hugger, which according to wiktionary is a Western political activist or official who supports Communist Chinese policies. 

In fact, when acting in our capacity as attorneys for some of our clients, we have been deported for a few days.  Given that we have a very smart group of Chinese nationals working in our offices, that last forced exit was limited to only a few days in Hong Kong.  And given that a few days of holiday with the family is not a bad thing...no harm, no foul.