Secretary of Transportation Sean Duffy said the project will continue to cost taxpayers billions of dollars with no definitive timeline for completion.

This comes after President Donald Trump criticized the project, vowing to investigate what he called the "worst managed project" he's ever seen.

The Trump administration said Thursday it is opening a review into whether to rescind about $4 billion awarded to California's High-Speed Rail project. Voters approved $10 billion for the high speed rail project in 2008 but the costs have risen sharply and President Donald Trump has sharply criticized the effort.

The Trump administration has launched a review of California’s high-speed rail project, adding to long-standing doubts about whether the venture, plagued by cost overruns and delays, will ever be completed.