Seek info on going to US BiWu2003-10-24 10:16:00

I am a new immigrant in Canada, but have not got my green card yet. I am here only for about a week, but planning to go back to US. What do I have to go through to do this? Any info will be appreciated.

拿有效的Ｉ－９４表３０天内回美国就行。