The US has revoked the visa of the Brazilian ambassador in Washington after Brazil withheld formal approval for President Donald ​Trump’s nominee as US ambassador and denied visas to two American diplomats, a senior State Department official said on Tuesday. Brazilian Ambassador Maria Luiza Ribeiro Viotti’s visa will be restored “if ​the balance is restored by giving agrément to our chosen ambassadorial nominee”, said the official, who briefed reporters on condition of anonymity. The Brazilian government on Tuesday strongly condemned the US State Department’s decision to alter the visa status of Brazil’s ambassador to Washington, calling the reasons cited by the US “false”. The US Senate has yet to confirm his nomination, and he will not be able to take up the post until Brazil approves. Regarding Washington’s criticism of the approval process for the new US ambassador, Brazil said the US had publicly announced its nominee before formally requesting approval, in violation of Article 4 of the Vienna Convention on Diplomatic Relations.