US Revokes Visa of Brazil's Ambassador in Retaliation Over Blocked Nominee

On August 4, 2026, the Trump administration revoked the visa of Brazilian Ambassador Maria Luiza Ribeiro Viotti. The State Department tied the move to Brazil's refusal to approve Daniel Perez, Trump's nominee for US ambassador to Brazil, and Brazil's July denial of visas for two US diplomats. Viotti's visa could be restored if Brazil accepts Perez. Brazil called the action "ideologically motivated" and won't decide on Perez before its October 4 election.