Do I need proof of the source of funds to apply for a US visa?

There is no need to provide proof of the source of funds, only proof of income and financial resources.

Asset certificates include:

1. Payroll for the last three months (with official financial seal);

2. Passbooks with multiple transaction records deposited at least six months ago;

3. Bank card statement with multiple transaction records (the cardholder's name and card number must be clearly displayed on the statement and stamped with the bank seal);

4. Real estate (original and photocopy of real estate license) and vehicle production (original and photocopy of motor vehicle ownership certificate or driving license) are used as auxiliary materials, that is, more certificates are provided on the basis of providing deposits;