There is nothing he can do to kill it, even if he delays all recent federal funding that won't kill the project and its likely CA can move some money around now to keep the project on track, that can then get used for something else in 2-3 yearsHe said this toward the end of his rant...
He's not investigating it to fix it, he's investigating it to kill it for good, just like he tried to do the last time, and this time he'll succeed.