My wife's H4 VISA and I-94 has expired.
I want to do her VISA stamping (I don't have I-797 for her and I have not stamped my VISA).
She is flying early next month to India.
So please someone let me know whether my VISA should be stamped for her VISA stamping or my I797 petition will do for her stamping. Also please let me know what all documents she would require for her stamping.
Also, is UK Transit VISA required as she is flying via LONDON?
Thanx in advance for your kind reply.