The United States nominated Daniel Perez as its ambassador to Brazil without prior consultation with the Brazilian government [1, 2].

This diplomatic breach risks creating friction between Washington and Brasília, as the appointment of a high-level envoy typically requires mutual agreement to ensure stability in bilateral relations.

Reports on June 3 [1] indicated that the Brazilian Foreign Ministry, known as Itamaraty, has not given its approval for the nomination. The lack of a preliminary agreement between the two nations has caused irritation within the Brazilian diplomatic corps [1, 2].

Standard diplomatic protocol generally involves a process of consultation where the nominating country seeks the host country's consent, known as *agrément*, before making a public announcement. By bypassing this step, the U.S. has deviated from the customary norms that govern international representation.

The Brazilian government has yet to issue a formal statement regarding whether it will eventually accept Perez or if the nomination will be rejected [1, 2]. This uncertainty leaves the U.S. embassy in Brasília in a precarious position as it awaits a resolution to the appointment process.

Officials in Brasília are now weighing the impact of this nomination on current trade and political cooperation. The tension underscores a potential shift in how the U.S. manages its diplomatic outreach in South America, specifically regarding the level of deference paid to regional powers.

The United States nominated Daniel Perez as its ambassador to Brazil without prior consultation.

The bypass of traditional diplomatic consultation suggests a potential strain or a deliberate shift in the U.S.-Brazil relationship. If Brazil refuses to grant *agrément* to Daniel Perez, it could lead to a prolonged vacancy in the ambassadorship, signaling a period of cooled relations and reduced high-level diplomatic coordination between the two largest economies in the Western Hemisphere.