this should help you - https://www.ustraveldocs.com/n...

You can drop the passport for renewal, but the odd of renewing the visa in such way is very low for general people. This process may be for the wase of high profile people who are associated with government. If the visa did not get renewed in your case, your parents should have to apply for face to face interview with new visa interview application and they may ask the very detailed questions.

Hello Khaikhok, did your parents applied for renewal? Do we have to send paystub, bank statement, etc for the visitor visa renewal process?

not yet...will update here once they do.

No financial stuffs are needed for visitor visa.

Hi, is there any update?