Australian shares are set to open lower as volatile trading continue on Wall Street as investors navigate President Donald Trump’s abrupt tariff decisions. Nvidia and Tesla paced another wave of tech sector selling. Trump, in a social media post, said he was pausing for a month 25 per cent tariffs on Mexico for all goods covered by the trade agreement he negotiated with Mexico and Canada during his first term. He made no mention of Canada. Nvidia, Tesla and Netflix were at least 5 per cent lower at midday. Palantir slumped 7 per cent; Marvell Technology shed 18 per cent...