I am just curious if the rules apply to all greencard holders no matter which country they are from ?
Which rules are you referring to? Really, you should stop digging up month old threads to post trivial responses to. If you have specific questions you should create your own thread.
As far as anything I posted in this thread it matters not what country the person is from (other than the comment about TN visas which are only open to nationals of Canada and Mexico).