All you need is your passport and the ticket. 

? · Oct 27, 2011 5:56 PM

 To leave the States: - your Passport - I-94 card (the little white card that was stitched to your passport at the port of entry). this card will be usually taken by the airlines staff or security officer at the port of exit and you'll get a new I-94 card at the port of entry when you come back - your boarding pass To enter back: - passport with unexpired visa - all I-20 forms till date (if you are leaving States after more than a year-long-stay here, you need to go to the advisor at your school and have it endorsed before you leave for Nepal - usually takes about a week) - boarding pass That's all you need. But if you have one, carrying your school's ID won't hurt.

jantare1 · Oct 27, 2011 10:44 PM

To leave you need  1. Your Passport 2. Your Id. 3. Your initiary.  that's all To return back to US. It depends on which way u coming. But for all- Its ur valid visa, Id, I-20 and a letter from your advisor from school. And while you reach to US immigration they will check you by asking your address. If its not the same as in the record and as you say, it may be a problem. they may waste your time ..

samue · Oct 28, 2011 12:17 AM

 And also- While you leave they take ur I-94. you will fill a new one on ur way back to USA and immigration signs it while u enter.. 

samue · Oct 28, 2011 12:18 AM