U.S. Cancels Brazilian Ambassador's Visa in Diplomatic Dispute

The U.S. canceled the visa of Brazil's ambassador, Maria Luiza Viotti, on August 4, 2026, because Brazil had denied visas to U.S. diplomats. A visa lets someone enter and stay in a country. She was not expelled. This broadens a campaign started in July 2025 against a Brazilian Supreme Court judge — now reaching Brazil's top representative in Washington.