US revokes Brazilian ambassador's visa in diplomatic feud

The Trump administration has cancelled the visa of Brazil's ambassador to the US, Maria Luiza Ribeiro Viotti, in direct retaliation for Brasília's refusal to accept Washington's nominated ambassador and its decision to deny visas to US officials last month. The tit-for-tat escalation marks a serious deterioration in relations between the two largest economies in the Americas. An official confirmed the move stops short of expulsion.