State officials defended the project and said they remain committed to construction, though it’s not clear what funding would replace federal support if it’s withdrawn.

The Trump administration plans to cut federal funding for California’s high-speed rail amid rising costs and delays, sparking state and political backlash.

The threat to cancel $4 billion in grants echoes Trump’s earlier move to withdraw $1 billion from the project during his first term, when he dismissed it as “a green disaster.”