Jared Isaacman, a billionaire entrepreneur who has twice launched to orbit in a SpaceX vehicle, faced pointed questions from senators of both parties before the Senate on Wednesday.

© Ken Cedeno/Reuters

Mr. Musk’s involvement in right-wing politics contributed to a 13% drop in deliveries in the first quarter, including steep declines in E.V.-friendly places like Norway.

© David B. Torch for The New York Times

Elon Musk now says his group will produce only 15 percent of the savings it promised. But even that estimate is inflated with errors and guesswork.

© Eric Lee/The New York Times

Intimidation doesn’t elevate performance; it undermines people.

In a court filing, Mr. Musk said he and other investors would pull their $97.4 billion bid if OpenAI withdrew its plan to change its structure.

The social media site agreed to pay in the range of $10 million to settle with the president, who had sued over the suspension of his account in 2021.

The company answered the billionaire’s offer in a legal filing, accusing him of hypocrisy.

Trumpism is not a working-class revolt against the elites. All I see is one section of the educated elite going after another section of the educated elite.

Plus, who isn’t in the Rock & Roll Hall of Fame.

It is right there, as clear as day in Article I, Section 9, Clause 7 that the legislature controls the money.

Everything is content.

Government investigations into Mr. Musk’s companies are stalling amid President Trump’s firings and Biden administration resignations.

Elon Musk’s cost-cutting team said that it had “terminated” 89 of the department’s contracts, apparently targeting its research arm.

The billionaire, who is serving President Trump as an unpaid “special government employee,” will file a confidential report on his financial interests, according to a White House official.

The Trump administration fired the Federal Emergency Management Agency’s chief financial officer and three others after Elon Musk misleadingly claimed the agency had used disaster relief funds for migrant services.

The billionaire is leading a group of investors in the unsolicited offer, which complicates the start-up’s plan to raise more money.

Staff members search for spending on “climate science,” “climate crisis” and “pollution” as one of the world’s premier climate research agencies girds for cuts.

Who needs N.I.H. grants? A lot of red-state universities, for one.

The tech mogul is unlikely to win. But his goal may be more about making life difficult for the A.I. start-up and its leader, Sam Altman.

President Trump’s early moves to slash the federal government and expand American territory represent significant ideological swings from his first term.