Stocks Slump as Trump Tariffs Take Effect

The S&P 500 added to recent losses in early trading. German automakers, many of which have plants in Mexico that make vehicles that are sold in the United States, were especially hard hit.

Dr. Oz: How His Millions Collide With Medicare

The TV celebrity and Trump nominee has pledged to divest from most of his financial interests. But they touch nearly every corner of health care, from insurance to blood pressure cuffs and vitamins, leading experts and lawmakers to doubt he could make impartial decisions.

Markets and Corporate America Are Unfazed by Washington Chaos, for Now

The federal budget debate has big implications for the economy. Businesses are betting that tax cuts will be extended and the math will work out.

Elon Musk Is Focused on DOGE. What About Tesla

Mr. Musk, one of President Trump’s main advisers, has not outlined a plan to reverse falling sales at the electric car company of which he is chief executive.

Chevron Wants to Tap Into A.I. Boom by Selling Electricity to Data Centers

The oil company plans to build natural gas power plants that will be directly connected to data centers used by technology companies for artificial intelligence and other services.

Oil Companies Embrace Trump, but Not ‘Drill, Baby, Drill’

Oil and gas executives welcomed President Trump’s early moves on energy policy, but many said they did not plan to increase production unless prices rose significantly.