The Department of Transportation (DOT) said late Tuesday it plans to cancel $929 million in federal grants for a high-speed rail project in California after Gov. Gavin Newsom (D) said the state would scale back the effort.

The DOT in a letter to the California High-Speed Rail Authority said the project has not progressed as originally laid out in its agreement with the government.

The DOT additionally announced it would seek to recoup $2.5 billion in funds already allocated from the "now-defunct" rail project, CNN reported.

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President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE in recent days has lashed out at California over the project, invoking its funds in his push for money to construct a wall along the southern border.

In a tweet early Wednesday, he called on the state to return billions of "wasted" dollars.

California now wants to scale back their already failed “fast train” project by substantially shortening the distance so that it no longer goes from L.A. to San Francisco. A different deal and record cost overruns. Send the Federal Government back the Billions of Dollars WASTED! — Donald J. Trump (@realDonaldTrump) February 20, 2019

Voters in 2008 approved plans for a high-speed rail that would have linked Los Angeles and San Francisco, with the project scheduled to be finished in 2022.

Newsom during his State of the State address earlier this month said the existing plan was too expensive and urged legislators to scale back the project to connect parts of the state's Central Valley.

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He pushed back after Trump initially told the state it owed the government billions, tweeting, "This is CA’s money, allocated by Congress for this project. We’re not giving it back.

"The train is leaving the station — better get on board!" Newsom tweeted.

Updated at 9:19 a.m.