Axios PM

April 27, 2026
👑 Hi there, Monday readers. Today's newsletter, edited by Alex Fitzpatrick, is 458 words, a 2½-min. read. Thanks to Sheryl Miller for copy editing.
1 big thing: AI courtroom showdown begins

Jury selection began today in a high-stakes trial between AI leaders Elon Musk and Sam Altman, promising grand theatrics rooted in the world's most disruptive industry.
Musk's civil suit accuses Altman and his top lieutenant of straying from OpenAI's original altruistic mission of shepherding AI as a revolutionary technology.
- ChatGPT maker OpenAI has brushed off Musk's allegations as unfounded and aimed at bolstering xAI, a rival that Musk launched in 2023.
⚖️ The trial's outcome could sway the balance of power in the AI world.
- Altman-led OpenAI is now one of the world's foremost AI companies, valued at over $850 billion.
- Musk's xAI recently merged with SpaceX, which is worth even more and set to go public this summer in the biggest IPO ever.
💰 The latest: Musk abandoned a bid for damages for himself after pretrial rulings went against him.
- He's now seeking an unspecified amount of money to fund the altruistic efforts of OpenAI's charitable arm.
The money would be paid primarily by OpenAI's for-profit side and Microsoft, which became OpenAI's biggest investor after Musk cut off his funding.
- OpenAI and Microsoft loosened their ties today, CNBC reports.
🥾 Musk's lawsuit also calls for Altman to be kicked off OpenAI's board.
2. 📸 Shoes left behind

Several White House Correspondents' Association dinner attendees fled shoeless after a gunman opened fire Saturday night.
- The forgotten footwear illustrates the chaos and confusion of the moment.
Accused attacker Cole Allen, of Torrance, Calif., was charged today with the attempted assassination of President Trump. The suspect didn't enter a plea.
3. ⚡️ Catch me up
- 🇬🇧 King Charles III arrived in the U.S. this afternoon for a royal visit amid a growing rift between President Trump and U.K. Prime Minister Keir Starmer. Go deeper.
- 🧑⚖️ The Supreme Court struck down a lower-court ruling blocking Texas from using its new congressional map that favors Republicans. More from Axios San Antonio.
- 🍁 Millions more Americans might qualify for dual Canadian citizenship under a recent change to Canada's requirements that led to a surge in applications. Go deeper.
4. 🔭 1 for the road: Night fight

The Atacama Desert's status as one of the world's foremost dark-sky sites is under threat.
- A rare combination of dry climate, altitude and low light pollution makes the Chilean desert an unrivaled hub for stargazing, astronomy and other science.
But a battle over a proposed energy plant — plus other forms of industrialization and urbanization — is worrying scientists and dark-sky advocates.
- That comes amid a broader fight between stargazers and Big Tech, especially as companies like SpaceX launch massive satellite networks that catch flak for messing with humanity's views of the cosmos.
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