Stocks on Wall Street surrendered early gains and closed broadly lower Friday after the White House said President Donald Trump would impose promised tariffs on key U.S. trading partners.

News from China upset U.S. markets this week and disrupted the frenzy that had built up around artificial intelligence.

Tariffs Could Hurt Oil Companies and Increase Gas Prices 4 min read How Could Trump’s Tariffs Affect the U.S., Canada and Mexico? 6 min read Flowers left at home of Edward Zhou, one of the ...

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