Dhaka, July 11 -- President Donald Trump said on Wednesday that the U.S. would impose a 50% tariff on all imports from Brazil after a public spat this week with his Brazilian counterpart who called him an unwanted "emperor."In a letter, Trump linked the tariffs to Brazil's treatment of former President Jair Bolsonaro who is on trial over charges of plotting a coup to stop President Luiz Inacio Lula da Silva from taking office in 2023.The levies were imposed due "in part to Brazil's insidious attacks on Free Elections, and the fundamental Free Speech Rights of Americans," the letter said.Brazil's real currency added to earlier losses to fall over 2% against the dollar after the announcement, and companies such as planemaker Embraer and oil...