In the tweet, Trump said he predicted that the lawsuit would have been filed by California, "the state that has wasted billions of dollars on their out of control Fast Train, with no hope of completion".
In a statement Tuesday, Newsom said, "It's no coincidence that the administration's threat comes 24 hours after California led 16 states in challenging the president's farcical 'national emergency.' The president even tied the two issues together in a tweet this morning". "We want that money back now", he tweeted.
President Trump's administration intends to cancel $929 million in federal grant funds yet to be paid for California's high-speed rail project, and also will explore legal options to seek the return of $2.5 billion previously paid for the project.
"Governor Newsom's recent comments significantly alter the scope and objectives of the California High Speed Rail project, eliminating the objective for which Federal funding was originally awarded - end-to-end high speed rail service from San Francisco to Los Angeles".
He said that while 50 years ago, many fiscal conservatives were concerned about BART's cost, today, it is "essential to the Bay Area". He argued that it will fail to complete the Central Valley construction by a 2022 deadline required by the grant.
No one knows what it might cost to build a high-speed rail system in California like the one sold to voters in 2008 - and worse yet, it's not clear just who, if anyone, would ride it.
The White House denied that the decision to cancel the funding was politically motivated, calling the project a "boondoggle" that "costs too much and will never be constructed as planned". He wants to refocus on building a line in central California.
Winter storm bringing 'widespread hazardous weather' stretching from Midwest to Northeast
Limited precipitation is expected in the metro until Friday evening with light rain or drizzle is expected to develop. Despite the passage of a frontal boundary late Wednesday night, Thursday will be a very warm day.
Turning to Twitter, Trump urged California on February 20 to return the money and lambasted recent reports that said the state was planning to reduce the scope of their railway project, which has been under construction for years. "However, we do have the capacity to complete a high-speed rail link between Merced and Bakersfield".
Art Bauer, a California Senate Transportation Committee staffer, told the Los Angeles Times he could not recall any precedent for such an action, but that "the governor unwittingly gave the federal government a reason to back away from the project".
If the federal government decides to take the money back, it doesn't have to wait for California to write a check. Construction of the rest of the track was postponed indefinitely. Instead it could withhold money from other transportation projects.
Gov. Gavin Newsom, a Democrat, was already less enthusiastic about the rail project than his predecessor, Jerry Brown, and has moved to limit active planning to the central California segment.
"Governor Newsom presented a new proposal that represents a significant retreat from the State's initial vision and commitment and frustrates the objective for which Federal funding was awarded", read the letter outlining the case for cancelling the money. Right now, there simply isn't a path to get from Sacramento to San Diego, let alone from San Francisco to L.A. "We're not giving it back".
"We can not financially sustain forcing everyone to drive a auto for every trip they want", Harnish continued, voicing the urgent rationale for a greener rail system.
The $77 billion bullet train project has always been a subject of criticism by the Trump administration and the Republican Party.