<h1>Brazil threatens retaliatory tariffs against US over interference in former president's criminal trial proceedings</h1> The Brazilian President announced retaliatory tariffs against the United States if the US President implements threatened 50% import taxes related to a criminal trial against Brazil's former president. Brazil will invoke its reciprocity law, matching any US tariffs imposed. The US leader sent a letter criticizing Brazil's judiciary and demanding changes to the former president's trial proceedings. The US President initiated tariffs under emergency powers, though the US maintains a trade surplus with Brazil. The interference has unified Brazil's politically divided population, with critics calling the move degrading to Brazilian sovereignty. Legal experts question the US President's authority to impose such tariffs without congressional approval.