TuSimple has had to grapple with safety concerns as well as government scrutiny of its dealings with a Chinese trucking startup. Photo: Cassidy Araiza for The Wall Street JournalSelf-driving trucking company TuSimple Holdings said Monday that it is winding down its U.S. business, reducing its workforce to about 30 people as it looks for a buyer for its assets that remain in the country. The demise of TuSimple’s U.S. operations marks a precipitous fall for the one-time leader in autonomous long-haul trucking. The San Diego-based company in the past year has had to grapple with safety concerns as well as government scrutiny of its dealings with a Chinese trucking startup.

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Persons: TuSimple, Cassidy Araiza Organizations: Wall Street, TuSimple Holdings, TuSimple’s Locations: TuSimple’s U.S, San Diego