Have your 'Green Card' on you at all times, no matter what.
From the link provided thanks to joemurphy I found this further link:
http://www.aila.org/content/default.aspx?docid=18258 - giving a blow-by-blow account of what each section of the act means.
My personal position is that some of this act is waaaay over the top, some of it is necessary and some of it is superfluous.
For me what is of interest are two sections. One which is harmless for me is Section 12, where the law will be changed that the US government will notify the embassies of their respective orginal countries that the naturalized citizens have renounced their citizenship. This wouldn't work for me as a UK citizen; I have to be the one to renounce it and _I_ have to do it in person, the US government saying that I have renounced it does not count. Plus it costs me #120 UK pounds to file the paperwork to get rid of my UK citizenship - it's not an easy process to get rid of Uk citizenship if you're born a British citizen.
The section which could be harmful for me is Section 6 - especially section 606 in removing drunk drivers. This section means that if I get pulled over for drunk driving then I get kicked out of the country. I am also sure that there is some text that could be interpreted that if an alien is found not having their card with them when being interrogated or questioned by a law officer then it is grounds for arrest and it becomes a felony rather than the misdemeanour that it is at present (and in fact the police officers at the traffic stops aren't too worried whether you have your green card on you - they're looking for drunk drivers or someone else...).
The one that concerns us all is the one that could turn anyone who unknowingly aids an illegal alien in any shape or form into a felon. Churches are up in arms over this.
I guess this is one for a letter to the senators to ask them to at least vote against certain amendments - especially against the one that could turn anyone into a felon unknowingly.
Mark.