US stock market loses $4 trillion in value as Trump plows ahead on tariffs
President Donald Trump's tariffs have spooked investors, with fears of an economic downturn driving a stock market sell-off that has wiped out $4 trillion from the S&P 500's peak last month, when Wall Street was cheering much of Trump's agenda.
A barrage of new Trump policies has increased uncertainty for businesses, consumers and investors, notably back-and-forth tariff moves against major trading partners like Canada, Mexico and China.
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