在特朗普政府终止加州高铁项目40亿美元拨款后，加州提起诉讼。

Core Viewpoint - California has filed a lawsuit following the termination of a $4 billion funding allocation for the high-speed rail project by the Trump administration [1] Group 1 - The lawsuit aims to challenge the federal government's decision to withdraw funding for the California high-speed rail project [1] - The funding was initially allocated to support the development of the high-speed rail infrastructure in California [1] - The termination of the funding is seen as a significant setback for the state's transportation plans [1]