Washington, July 10 -- US President Donald Trump announced a 50 per cent tariff on imports from Brazil, starting August 1 and called the trial of former Brazilian President Jair Bolsonaro a "witch hunt", adding that the "trial should not take place."

In the letter written to Brazilian President Luiz Inacio Lula da Silva on Wednesday (local time), Trump said he knew and worked with Bolsonaro and respected him greatly.

In the letter to President Lula, Trump wrote, "I knew and dealt with former President Jair Bolsonaro, and respected him greatly, as did most other Leaders of Countries. The way that Brazil has treated former President Bolsonaro, a Highly Respected Leader throughout the World during his Term, including by the United States, ...