I am working in USA with H1B VISA and my wife had H4B VISA. The stamped VISAs in our passports were expired an year ago. However our status got renewed while we were in USA and we got new i-797 documents. But our passport didn't get stamped with renewed status.
Now my wife is planning to visit our home country of India.
Now what should be the process to get new stamping for H4B VISA?
What are the documents that my wife has to carry for H4B VISA stamping?