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After a series of political victories under President Trump, firms are lobbying Congress for a sweeping framework they helped shape.

“If you think there’s a lot of money in politics now,” Marc Andreessen said in 2000, “you haven’t seen anything yet.” His firm is now the biggest known spender on this campaign cycle.

The start-up, which makes A.I.-backed weapons, was valued at $61 billion in the financing round, double what it was a year ago.

Jensen Huang boarded Air Force One in Alaska, joining a delegation of more than a dozen business leaders accompanying President Trump on his trip to Beijing.

The start-up, which recently released a powerful A.I. model called Mythos and is separately battling with the Pentagon, was previously valued at $380 billion.

The online marketplace called the cash-and-stock proposal “neither credible nor attractive.”

The cases seek to use consumer product safety laws to rein in chatbot companies.

Instructure, which provides Canvas software to thousands of schools and universities around the world, did not say what it had given the hackers in exchange for the stolen data.

Elon Musk’s lawyer argued that Microsoft’s Satya Nadella played a role in getting Mr. Altman his job back at OpenAI when he was briefly fired in 2023.

The company said that it had identified, for the first time, hackers using artificial intelligence to discover an unknown bug. The attempted attack represents “a taste of what’s to come,” one expert said.