Re- California Bullet Train
Don't have time now to dig but thought finding out who got the money might be a start:
www.bsa.ca.gov/pdfs/reports/2018-108.pdf
I had to look a little. In opening, the California State auditor seems to think they could need to repay funds:
"The Authority began construction in the Central Valley in October 2013 despite being aware of the risks associated with beginning construction early—the fact that the Authority had not acquired sufficient land for building, had not determined how it would relocate utility systems, and had not obtained agreements with external stakeholders. These unmitigated risks have contributed to $600 million in costs overruns thus far for the three active Central Valley construction projects, with another $1.6 billion in additional costs needed to complete the projects. The Authority has cited the terms of a 2010 federal grant—which originally required construction to be complete by 2017—as the primary factor in its decision to begin construction when it did. However, we determined that even with a grant deadline extension until December 2022, the Authority could miss the new deadline unless Central Valley construction progresses twice as fast as it has to date. Missing the deadline could expose the State to the risk of having to pay back as much as $3.5 billion in federal funds."