The president and his allies have turned investigations into a political tool for use against their enemies.

Mr. Gates, the Microsoft co-founder, met several times with Mr. Epstein, a sex criminal, a Times investigation found. Mr. Gates now concedes an error in judgment.

I went to Mr. Epstein’s Manhattan mansion to talk about Tesla. We ended up discussing much more — including his belief that sex with teenage girls should be acceptable.

Mr. Epstein, the accused sex trafficker, was fascinated by eugenics. He told scientists and others of his vision of using his New Mexico ranch to impregnate women.

Mr. Epstein, who has been charged with sex trafficking, did business with a prominent banker, a top private-equity executive and a hedge-fund billionaire.

Mr. Epstein, facing sex-trafficking charges, has long been hailed as a financial wizard. He got rich with the help of two wealthy connections, but there is little evidence he’s a billionaire.

A faked résumé led to a victory for an activist shareholder, and an enduring mystery about Scott Thompson’s departure from Yahoo.

Ford is phasing out its passenger cars, except one: the Mustang. The car may be only modestly profitable for Ford, but it has deep emotional power.

The bank deserved to pay for its reprehensible transgressions. But our columnist asks whether further punishment may just be hurting the shareholders.

The company’s stock has declined precipitously since hitting its peak in early February, battered by disclosures about improper use of its data.