Mr. Penny, who was acquitted after choking a mentally ill subway passenger to death, will work for Andreessen Horowitz. Before the killing, he had been an architecture student.

Venture capitalists plowed money into A.I. start-ups like OpenAI and Anthropic. But the rise of the Chinese A.I. start-up DeepSeek has called that funding frenzy into question.

The White House defied a law that requires giving Congress 30 days’ notice and detailed reasons before removing the watchdog officials.

Marc Andreessen explains the newest faction of conservatism.