P.M. Edition for April 7. Amrith Ramkumar, who covers tech policy for the Journal, discusses how President Trump’s tariffs risk undercutting his goals of curbing inflation, supporting U.S. manufacturing and boosting a build-out of AI data centers. Plus, Trump threatens China with an additional 50% levy if Beijing doesn’t withdraw its retaliatory tariff by tomorrow. And U.S. markets went on a wild swing that added—and then erased—more than $2 trillion in value in a matter of minutes. WSJ markets reporter Hannah Erin Lang walks us through what happened. Alex Ossola hosts.

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