Transportation Secretary Sean Duffy ordered a "compliance" review of the project, hinting that $4 billion of federal funds could be at risk.

President Donald Trump canceled nearly $1 billion in federal funding for the high-speed rail project in 2019, during his first term. The Biden administration later restored the funding and, in December 2023, allocated $3.3 billion more.

It’s the worst managed project I think I’ve ever seen,” Donald Trump said last week. “I built for a living and I built on time — on budget. ... It’s impossible that something could cost that much.”