Requirements for a US citizen to travel to Brazil with evisa :
1. U.S. Passport: Must be valid for at least 1 month upon arrival (and recommended to have blank pages).
2. Photograph: A recent digital passport-style photo meeting official specs.
3. Travel Proof: Confirmed round-trip/onward flight tickets and hotel or accommodation reservations.
4. Financial Proof: Evidence of sufficient funds (such as showing a $2,000 average balance across recent bank statements or payslips, or a financial sponsor).
https://brazil.vfsevisa.com/tourist-visa.html?country=United+States