Sometimes the numbers tell a story that demands answers, and President Donald Trump made clear this weekend he intends to get them.

Speaking with reporters before boarding Air Force One at Palm Beach International Airport on Saturday, the president doubled down on his administration’s scrutiny of a Federal Reserve building renovation that saw costs spiral from what he estimates could have been a $25 million project into a staggering $4 billion undertaking.

“Well, I want to find out,” Trump stated plainly when asked about U.S. Attorney Jeanine Pirro’s announcement that her office would close its investigation into the Federal Reserve. “You know, it’s not dropped. They’re looking into the whole thing about the crisis.”

The matter centers on a headquarters renovation project that ballooned far beyond its approved budget of $2.46 billion. According to the Federal Reserve’s own accounting, unexpected complications including additional asbestos and rising costs during construction pushed the final price tag higher still.

But Trump sees something more troubling in those numbers, something that warrants the kind of scrutiny that separates responsible governance from rubber-stamping government excess.

“What I want, with the IG, what I want to look at is how can a building that I could have done for $25 million cost $4 billion?” the president asked. “That’s a big thing.”

The investigation now moves from federal prosecutors to the hands of Inspector General Michael Horowitz, a longtime government watchdog whose oversight role may prove more appropriate for examining the financial management questions at the heart of this matter.

Federal Reserve Chair Jerome Powell finds himself at the center of these questions. Trump noted pointedly that Powell “was in charge” during the renovation period. The Fed chairman faces scrutiny over statements he made to Congress regarding the management of these renovation costs.

Powell himself revealed the Justice Department investigation in a video statement back in January, characterizing it as an unprecedented attempt at intimidation designed to pressure him into lowering interest rates. The relationship between Trump and his own Federal Reserve appointee has grown increasingly strained as disagreements over monetary policy have intensified.

“So, we’ll get to the bottom of it,” Trump assured reporters. “Yeah, I think Jeanine is fantastic. And she worked with other people on that. I tell you, I want to find out. I have an obligation to find that.”

The president emphasized that while the renovation project took place during the Biden administration, his duty to taxpayers requires answers. “This was done during Biden, but I have an obligation to find out how does it — I would have done that building for $25 million and had money left over. And it would have been open a long time ago.”

The Federal Reserve attributes the budget overruns to unforeseen complications, a familiar refrain in government construction projects that often leaves taxpayers footing bills that would make private sector executives blanch.

Whether the inspector general’s investigation yields accountability or simply adds another chapter to the long history of government cost overruns remains to be seen. What seems certain is that this president has no intention of letting the matter fade quietly into the background.

In an era when billion-dollar price tags have become almost routine in federal spending, Trump’s insistence on asking basic questions about value and efficiency strikes at something fundamental. How much should things cost? Who is responsible when they cost far more? And what recourse do taxpayers have when the numbers simply do not add up?

Those questions deserve answers, and this administration appears determined to get them.

Related: Sixty Illegal Immigrants Intercepted at Sea as Smugglers Turn to Maritime Routes