Contrary to popular belief, there is no such thing as a "restricted currency" in the United States. Any foreign currency, including the Brazilian real (BRL), can be freely exchanged for US dollars at banks, currency exchange bureaus, or through online forex platforms. The US financial system imposes no legal barriers on holding, buying, or selling foreign currencies.
Confusion sometimes arises because some countries restrict the export or purchase of their own currency. Brazil, however, does not impose such controls on the real. It is a freely floating currency traded globally. While you may encounter practical limitations—such as limited availability at local US banks or wider spreads for less common currencies—these are market-driven, not regulatory.
If you need Brazilian reais, major international airports, large bank branches, and specialized currency services typically stock them or can order them within a few business days. Online currency exchanges also offer competitive rates with home delivery.