The State Department has revoked the visa of Brazil's ambassador to the United States, according to a senior department official, marking the latest escalation in a growing diplomatic dispute between Washington and Brasília. The official said Washington believes "the government of Brazil owes us a prompt and positive answer" on the ambassadorial request. The Brazilian government condemned the State Department's move in a statement, saying the "justifications offered for the decision are false." The visa dispute follows Brazil's earlier decision in July to deny visas to two U.S. State Department officials, accusing them of attempting to interfere in the country's upcoming October elections by questioning the integrity of its voting system. The State Department has rejected those allegations as baseless, saying the planned visit by officials from the Bureau of Democracy, Human Rights and Labor was part of a routine engagement.