If in the process of getting greencard can someone travel outside the U.S.?

[immihelp]

Dear Sir or Madam,

First, I would like to appreciate you willingness to read my question!

I would like to get information about the criteria or procedure one has to follow during the process of getting green card.

The Reason why ask is, there is one U.S resident he is there as a working Visa, but now he is in the middle of a process getting Green Card. So, is there any reason that wouldn't allow him to go out side of U.S while he is in Green Card process for a very short time ;three days?

That means , he got invitation from canada( he is a legendary Artist) to perform for only one day and be back the next day.

So, he is frastrated that going out sideof U.S during this time would let his process in danger.

I would really appreciate giving me your precious time to read this and Hope you will provide me some information on this regard, by the way I have tried to look up on the web site but couldn't get any thing about this matter.


I do really thank you for you help!

[immihelp]

That depends upon what visa he is on currently, and what stage of the green card process he is in.