A day earlier, US Trade Representative Jamieson Greer said he had launched an investigation into what he called "unfair trading practices” by Brazil. 

Brazil, in a letter to the US on Tuesday, suggested there were "areas of negotiation where we could further explore mutually agreed solutions," according to a joint statement by Brazil’s Ministry of Foreign Affairs and Ministry of Development.

Brazil expressed "indignation" at the planned tariff increase from 10% to 50% on its exports to the US, warning of a "very negative" impact on both economies. The letter noted that Latin America's largest economy has run persistent trade deficits with the US in both goods and services, totaling nearly 410 billion USD over the past 15 years.