Trump has repeatedly called for a closer partnership with Brazil's right‑wing factions, citing trade and security ties. The former president's comment came after the Electoral Court certified Lula's victory, a result that many Brazilian voters saw as a return to progressive policies.
He made the remarks on Monday as he departed Washington, where he was scheduled to headline a rally for the Republican Party's midterm ticket. The rally drew over 15,000 supporters, many of whom waved flags and chanted slogans.
Brazil's Supreme Court had earlier annulled a 2023 ruling that would have barred Bolsonaro from running, allowing the former congressman to contest the ballot. The decision was welcomed by opposition parties but criticized by some civic groups.
International observers noted that the election was generally regarded as free and fair, though some irregularities were reported in rural polling stations. The United Nations' observation team praised the high turnout.
Trump's criticism arrives amid growing tensions over U.S. trade policies with Brazil and sparked calls from the Brazilian government for a formal review of the allegations. Lula is set to be sworn in on May 1, after a celebratory ceremony in Brasília.