African trade flows may shift further away from the US after President Donald Trump announced a slew of new tariffs, the head of Citigroup Inc.’s regional office said.Trump unveiled a revised global plan on Thursday that imposed levies as high as 30% on imports from countries including South Africa — the continent’s biggest economy — and Algeria.

South Africa is preparing a last-minute "enhanced" trade proposal at the urging of U.S. officials in hopes of avoiding a 30% tariff which kicks in on Friday, its trade minister said on Thursday.