Then what about deaths caused by poor roads? Poor signage? Lack of maintenance? Poor signaling? Too little road capacity? But that isn't being taken care of in any sort of coordinated fashion.
And that is still ignoring the biggest problem, which is simply bad driving, idiotic distractions, poor vehicle maintenance, personal AND commercial.
-- Edit...
I want to clarify one thing, a CONGRESSIONAL INVESTIGATION can only serve as a grandstand for sound-bites. That's it. House and Senate members are clueless about essentially everything. An NHTSA review would be more appropriate, and more likely to lead to discovering actual truths.
Second, sort of off topic, but perhaps not, point would be that way back when, a time that I played around with motorcycles, I actually attended an eight week course on bike safety (paid for), which included training in how to lay down a bike at speed, how to deal with blowouts, bad conditions, slicks, gravel, and how to deal with surprises. That was an extremely valuable experience, and well worth the time and money. It may be that there should be similar courses for automotive safety, but it seems more important here and now to pretty much just hand out licenses to any and all comers.