While speaking to reporters in the Oval Office on Tuesday, President Trump slammed California's costly high-speed rail project and challenged Gov. Gavin Newsom to run for president.The California high-speed rail project was the brainchild of former California Governor Jerry Brown and has now become Newsom's issue.

The government was already investigating how the state was spending a federal grant on the train project to connect Los Angeles and San Francisco.

The President has targeted federal funding for the California bullet train project since his first administration.