US President Donald Trump's backing for a far-right Brazilian ally could inadvertently boost leftist President Luis Inacio Lula da Silva's flagging political fortunes, analysts say.

Brazil’s President forcefully rebuked Trump after the U.S. leader called the prosecution of Lula’s predecessor, Bolsonaro, a “witch hunt” and hiked tariffs on the Latin American nation.

By Nandita Bose, Bernardo Caram and Gabriel AraujoWASHINGTON/BRASILIA/SAO PAULO (Reuters) -Brazil's government on Friday downplayed the impact of the 50% tariff U.S. President Donald Trump threatened to impose on imports from that country,