Been watching the critical minerals sector pretty closely, and there's something that really explains why these rare earth and lithium stocks keep disappointing investors right now. USA Rare Earth looked like it had momentum earlier this year when the Commerce Department announced $1.3 billion in CHIPS Act funding and committed $277 million for an equity stake. The stock jumped nearly 8% on the news. But here's the thing - that rally didn't stick around.

Within days, shares were down 13%, completely erasing those gains. And the reason is actually pretty straightforward once you understand what the government just decided to do differently.

Last year, when the Department of Defense invested $400 million in MP Materials, they didn't just hand over cash. They guaranteed to buy the company's rare-earth production at a floor price of $110 per kilogram for a full decade. That's a massive safety net - essentially a subsidy that kicks in if market prices collapse.

But the Trump administration has apparently decided that was a mistake. According to recent reporting, they're backing away from offering similar price guarantees to other critical minerals projects. And that includes USA Rare Earth.

So what does that mean in practical terms? Without a price floor, if market conditions deteriorate and costs exceed revenue, USA Rare Earth just... loses money. The government won't step in to protect the investment. Analysts are already forecasting a $252 million loss for the company this year.

This is why so many investors who bought into the government support narrative are getting cold feet. The subsidy structure they were banking on isn't materializing. It's the same dynamic affecting lithium stocks and other critical minerals plays - the market's realizing that government backing doesn't always translate into guaranteed returns.

The broader issue here is that investors need to distinguish between government support and government guarantees. One looks good in a press release. The other actually protects your downside. USA Rare Earth got the first one, not the second.