President Donald Trump's volatile tariff threats are unleashing historic jumps in public anxiety, with the potential to undermine his pledges to strengthen a U.S. economy that is increasingly weakened.

Trump has praised tariffs as a fix for economic issues, but their erratic rollout and shifting reasons have worried investors. See a timeline of the president’s trade rhetoric.

Stocks have been turbulent because of questions about how much pain Trump will let the economy endure through tariffs and other policies in order to reshape the country and world as he wants. He’s said he wants manufacturing jobs back in the United States,

Tesla warned of the hit to its bottom line from tariffs, while SpaceX complained that foreign trade barriers affect its Starlink internet satellite service.

U.S. automaker Tesla has warned that it and other major American exporters are exposed to retaliatory tariffs that could be leveled in response to President Donald Trump's aggressive use of tariffs. Julian Satterthwaite reports.