AdvertisementSKIP ADVERTISEMENTBrazil Has a New Digital Spending Habit. Now It’s a Trump Target.Brazil’s fast and free homegrown digital payment system, PIX, has become wildly popular. The Trump administration says it unfairly undercuts U.S. companies.A PIX payment QR code at a popcorn stand at Ipanema Beach in Rio de Janeiro. The system accounts for nearly half of Brazil’s financial transactions.Credit...Dado Galdieri/BloombergSept. 29, 2025“Cash or card?” For millions of Brazilians, the answer...