U.S. Secretary of Transportation Sean Duffy said Thursday he would launch a compliance review of the $4 billion in federal funds allocated to California’s high-speed rail project — the ambitious, but long-delayed plan to send bullet trains from Los Angeles to downtown San Francisco.

U.S. Transportation Secretary Sean Duffy has asked for a compliance review of California's controversial High Speed Rail project. "We're going to look at whether the California High Speed Rail Authority has actually complied with the agreements that they've signed with the federal government,