WASHINGTON: Companies, consumers and farmers across North America braced on Friday (Jan 31) for US President Donald Trump to impose 25 per cent tariffs on Canadian and Mexican imports within hours, moves that could disrupt nearly US$1.6 trillion in annual trade. Trump has set a Saturday deadline to impose the punitive duties over his demands that Canada and Mexico take stronger action to halt the flow of illegal immigrants and the deadly opioid fentanyl and precursor chemicals into the US.