US Strips Brazilian Ambassador's Visa in Diplomatic Dispute

On August 4, 2026, the Trump administration took away the visa of Brazilian Ambassador Maria Luiza Ribeiro Viotti. A visa is official permission to stay in a country. The US acted because Brazil refused to approve Trump's choice for US ambassador to Brazil, Daniel Perez, and had denied visas for two US diplomats in July. Brazil called the action "ideologically motivated" and won't decide on Perez before its October 4 election.