So the U.S. Department of Justice just told France to back off its criminal investigation into X, and I've been refreshing this story all weekend trying to piece together the full picture. The Wall Street Journal broke it on Saturday, April 18, 2026, citing a two-page letter from the DOJ's Office of International Affairs dated Friday, April 17. The letter didn't mince words. France's probe, in the DOJ's view, is an attempt to use criminal law to regulate a platform for the free expression of ideas, which the U.S. says runs straight into First Amendment territory.
And then today, Monday April 20, Musk was supposed to show up for a "voluntary" hearing in Paris. Reuters is reporting he didn't appear. So this thing is very much live.
Let me walk through the timeline, because the dates here actually matter.
The French investigation was opened in January 2025 by the Paris prosecutor's cybercrime unit, after a lawmaker's complaint alleged that X's content algorithm showed bias and could amount to distortion of an automated data system. Some officials framed the algorithmic skew as potential foreign interference. Over the next year the scope kept widening. By early 2026, prosecutors had folded in allegations of fraudulent data extraction, AI-generated child sexual abuse material, Holocaust-denying content, and non-consensual sexual deepfakes tied to Grok's image features.
Then came the February 2026 raid on X's Paris offices. X called that raid an "abusive act of law enforcement theater" and framed it as politically driven rather than legally grounded. The April 20 hearing date was actually set back in February during that raid. Musk and former X CEO Linda Yaccarino (who ran the platform from May 2023 to July 2025) were both summoned for voluntary interviews. Other X employees are being questioned as witnesses throughout this week.
Here's where the DOJ steps in. According to the WSJ, France made three separate formal requests for U.S. cooperation this year. The DOJ's response basically says each request was an attempt to pull Washington into a politically charged prosecution aimed at regulating a social media platform through criminal law. An xAI official told WSJ they're grateful the DOJ pushed back and hope Paris drops the case. Musk himself reposted the story on X with a short five-word comment: indeed, this needs to stop.
Paris isn't backing down. The prosecutor's office responded to Reuters saying it had no knowledge of the DOJ letter and pointedly noted that the French constitution guarantees separation of powers and judicial independence. Translation: we don't care what Washington thinks, we'll keep going. Prosecutors also said a Musk no-show doesn't block the investigation from continuing.
Now here's the part that makes this more than just another Musk-versus-Europe headline, and where it gets interesting from a markets angle.
SpaceX officially merged with xAI on February 2, 2026, in a $1.25 trillion deal, the largest merger ever recorded. That combined entity is gearing up for what analysts are calling the biggest IPO in history. Listing valuations being floated are in the $1.5 to $1.75 trillion range, and reports tie the target window to June 2026. Kalshi betting markets have been pricing roughly 76% odds of an IPO before September 1, 2026.
And here's the kicker from the French filing. The Paris prosecutor's office said in its statement today that the Grok deepfake controversy may have been engineered "ahead of the planned June 2026 stock market listing of the new entity formed by the merger of SpaceX and xAI, at a time when company X was clearly losing momentum." That's not a throwaway line. That's prosecutors alleging the controversy itself may have been part of a valuation play. Whether that theory holds up in court is a different question, but it's now on the record.
So suddenly a criminal case in France isn't just a regional regulatory scuffle. It's a potential overhang on one of the most watched listings in market history.
That's probably why the temperature around this is so hot. Telegram founder Pavel Durov, himself arrested at a Paris airport in August 2024 on charges tied to Telegram's non-response to legal requests, jumped in over the weekend to back Musk publicly and accused France of weaponizing criminal prosecution against digital platforms. Whether you agree with him or not, the cross-border politics here are real.
My honest read? This case isn't going away. France doesn't need U.S. cooperation to move forward domestically, and prosecutors have clearly signaled they'll grind on regardless of who shows up to hearings. Meanwhile the DOJ's letter plants a pretty firm marker that Washington is not going to rubber-stamp European speech-regulation efforts just because a foreign court asks. Investors looking at the SpaceX-xAI IPO should probably price legal noise from Europe as a running operating cost, not a one-off risk.
For crypto and Web3 folks watching from the sidelines, there's a parallel worth sitting with. The tension between national regulators trying to control platforms and the global, borderless nature of digital networks isn't a Musk-only problem. It's the exact same tension showing up around exchanges, stablecoin issuers, and DeFi protocols every time a jurisdiction decides it wants to assert authority over something it can't physically touch. How the X fight plays out could quietly shape the playbook for the next wave of regulatory showdowns across the whole digital economy.
Sources: Wall Street Journal (April 18, 2026), Reuters, AP, Fortune, CNBC, The Hill, Bloomberg.