U.S. Citizens who find themselves destitute in Brazil may request the assistance of the U.S. Embassy or Consulates in Brazil to communicate with family or to return to the United States.
With your permission, the Embassy/Consulate can call your family and friends to explain how money can be sent to you from the United States. You will need to complete a Privacy Act Waiver (PDF file 28 KB). If no other resources are available, citizens can apply for a repatriation loan to purchase a one-way ticket directly back to the United States. In these cases, citizens will have to sign a promissory note agreeing to repay the loan to the United States Government.
For information on how a consular officer can help under these circumstances, see https://travel.state.gov/content/travel/en/international-travel/emergencies/emergency-financial-assistance.html