US revokes Brazilian ambassador's visa amid diplomatic spat

On August 4, 2026, the United States revoked the visa of Brazil's ambassador to the US amid a diplomatic dispute between the Trump administration and Brazilian President Luiz Inácio Lula da Silva. The move escalates tensions between the two countries. The dispute appears to be linked to ongoing friction between the two leaders. No further details about the specific cause of the spat were provided in the headlines.