Here's a rule that probably shouldn't need saying, but apparently does: if you work for the government, you shouldn't use your inside knowledge to place bets in prediction markets. The Trump administration recently sent out a reminder.

The White House Management Office disseminated a warning to all staff via email on March 24, according to a report. That was just a day after President Donald Trump announced a five-day pause in strikes against Iran on Truth Social.

Now, existing ethics rules already bar executive branch employees from gambling on federal property or using government information for personal gain. A senior administration official described this warning as a timely "refresher." It's the kind of refresher you get when people start noticing something odd.

Davis Ingle, Trump's spokesperson, confirmed the authenticity of the warning. Ingle added that insider trading restrictions are standard practice and rejected claims that officials profited at the public's expense as "baseless and irresponsible" reporting.

When a 'Refresher' Points to a Bigger Problem

So why send a refresher now? Well, it might have something to do with the reports of over $500 million in oil market bets made minutes before Trump's Iran announcement. That's the kind of coincidence that tends to raise eyebrows, and not just in the White House.

This isn't an isolated incident. Earlier this year, a trader on the prediction market platform Polymarket turned $34,000 into $436,000 by betting on the capture of former Venezuelan president Nicolas Maduro by the Trump administration. That's a pretty specific bet to get right.

Federal prosecutors are now probing Polymarket for potential violations of insider trading and other federal laws, following these and other lucrative bets on the platform. The line between making a smart prediction and trading on non-public information can get blurry in these markets, and regulators are starting to pay attention.

In an interview this week, Kalshi CEO Tarek Mansour said he supports regulatory scrutiny over fraud and insider trading risks in the prediction market. He emphasized the need for oversight to detect and punish bad actors, calling increased regulation a natural and positive step for the industry's growth.

It's a fascinating moment for prediction markets. They're designed to aggregate information and forecast events, but they can also become a venue for trading on secrets. The White House's "refresher" is a small sign of a much larger conversation about what happens when betting markets meet sensitive government information. The rule might be simple—don't bet on your own work—but enforcing it in a world of instant digital markets is getting complicated.