Thirty-one Democratic members of Congress — 30 House members plus Bernie Sanders — sent a letter to Secretary of State Marco Rubio on Thursday accusing the Trump administration of a "sustained, multifaceted campaign of interference and destabilization in Brazil." The letter lands five weeks before Brazil's first-round presidential vote on 4 October, with polls showing a technical tie between incumbent leftist Luiz Inácio Lula da Silva and far-right senator Flávio Bolsonaro, son of convicted former president Jair Bolsonaro. The lawmakers catalogued specific instruments of pressure. Trump imposed initial tariffs on Brazil last year, openly linking them to the trial of Jair Bolsonaro for his attempted coup after losing the 2022 election to Lula. In July, a second round of tariffs hit under Section 301 of US trade law. The administration also planned to send two officials to Brazil to question the integrity of the country's electronic voting system — a system widely regarded by experts as among the most reliable globally. Brazil's government denied the delegation visas. The letter frames these moves not as isolated actions but as part of a regional pattern. Democrats cite alleged interference in Argentina's midterm elections, Honduras's presidential election, and Colombia's presidential race, where far-right candidate Abelardo de la Espriella won the second round after a similar complaint letter was sent in July by 11 Democratic members of Congress. Lula has repeatedly accused Trump of meddling. At the UN General Assembly this week, he said — without naming anyone — "We will not allow the enemies of democracy, internal or external, to act against the will of the people." The Brazilian president has positioned the election as a sovereignty test, turning US pressure into a domestic rallying point. The Democrats' letter asks Rubio whether the Trump administration will commit to respecting Brazil's electoral process and requests a response by 1 October — three days before the first round. The State Department has not responded to requests for comment. What makes the accusation structurally serious is the toolkit's breadth: trade policy, diplomatic delegitimization of voting infrastructure, and political alignment with a specific candidate whose father was convicted of an attempted coup. Each instrument alone could be explained as routine policy. Combined and sequenced, the lawmakers argue, they form an interference campaign. The 20-year question is whether US foreign policy toward Latin America is reverting to a Cold War posture — using economic leverage and institutional destabilization to pick winners in allied democracies — but now with trade tariffs replacing CIA operations as the primary tool. If this pattern holds across multiple elections, the cost is not just bilateral relations with Brazil but the credibility of the US as a democratic norm-setter in the hemisphere.
