The U.S. government formally revoked the visa of Brazilian Ambassador to the United States Maria Luisa Viotti on August 4, triggering strong opposition from the Brazilian government. Brazil accused the U.S. of deliberately escalating “hostile activities” against Brazil and interfering in its internal affairs.
According to U.S. media reports on August 4, the U.S. government revoked Viotti’s visa on grounds of “reciprocal retaliation.” The State Department cited two reasons: Brazil’s refusal last month to issue visas to two U.S. State Department officials, and Brazil’s prolonged failure to accept the U.S. presidential nominee for ambassador to Brazil. A senior State Department official said the move was a “reciprocal response” to Brazil’s actions. The official added that the U.S. had repeatedly delayed the measure to give Brazilian President Lula room to maneuver, but Lula never changed his stance. According to the State Department official, if Brazil takes “appropriate action” and accepts the U.S. ambassadorial nominee, the U.S. could quickly reverse the measure.
The U.S. also emphasized that revoking the visa was not equivalent to expelling the Brazilian ambassador. Viotti may continue to live in her official residence in Washington and continue working, but if she leaves the United States, she must reapply for a visa to return.
The Brazilian government issued a statement on August 4 strongly opposing the State Department’s decision, arguing that neither of the two reasons put forward by the U.S. was valid. In its statement, the Brazilian President’s Office said both reasons given by the U.S. for revoking the visa were untrue, and that the decision was not an isolated incident but rather a “deliberate escalation” of “hostile activities stemming from ideological differences.”
Regarding Brazil’s refusal in July to issue visas to two senior U.S. State Department officials, Brazil emphasized that the two officials were visiting Brazil to question the integrity of Brazil’s electoral system and attempt to interfere in the country’s domestic political process — conduct that was unacceptable. Brazil’s Foreign Ministry confirmed on July 25 that the two U.S. officials denied visas were Assistant Secretary of State Riley Barnes and Deputy Assistant Secretary of State Samuel Samson, who had planned to meet with right-wing presidential candidate and former President Jair Bolsonaro’s son, Flávio Bolsonaro. Senior Brazilian officials revealed that they suspected the U.S. officials’ trip was intended to meet with “skeptics” of Brazil’s election process and subsequently produce a report undermining the legitimacy of Brazil’s electoral voting system, laying the groundwork for challenging the election results.
Regarding the U.S. accusation of “prolonged failure to accept the U.S. ambassadorial nominee,” the Brazilian government statement noted that under the Vienna Convention on Diplomatic Relations, the sending state must ascertain that the proposed head of mission has received the consent of the receiving state. The relevant procedures are confidential, and the U.S. publicly disclosed the name of its ambassadorial candidate to Brazil before obtaining Brazil’s formal consent. The Brazilian government emphasized that the Vienna Convention does not set any time limit for the acceptance process of a nominated ambassador, and the matter of the U.S. ambassadorial nominee to Brazil remains under evaluation. According to reports, the U.S. had even initiated procedures to seek forced dispatch without Brazil’s acceptance.
Brazilian President Lula said in a media interview on August 5 that the U.S. government’s revocation of the Brazilian ambassador’s visa was “irresponsible and thoughtless.” Lula called for calm between the two countries while stressing that Brazil is prepared to respond to any external forces attempting to interfere in its electoral process.
The visa dispute is the latest manifestation of continued tensions in U.S.-Brazil relations. The two countries have been in friction since July 2025. Former President Bolsonaro was sentenced to more than 27 years in prison for an attempted coup, and Trump has repeatedly expressed public support for Bolsonaro. In June 2026, Trump nominated Florida House Speaker and Republican Dan Perez as U.S. ambassador to Brazil, but Brazil has yet to accept the nomination.
Brazil is scheduled to hold the first round of its presidential election on October 4. Analysts point out that as the election draws nearer, a series of U.S. actions are being viewed by Brazilian舆论 as an attempt to pursue a “new Monroe Doctrine,” leading to continued escalation of tensions in U.S.-Brazil relations.