In 1963 when then 17, Laura Bush ran a stop sign in a crash that killed a friend in another car. Some reports say it was her then boyfriend in the other car. The police report was released in 2000, and noted that Laura wasn't charged with a crime for the death.
And if you don't believe me, surely you believe Family Guy...
Was she drunk?
Harder to get to a crime if she wasn't.
Different time. Different laws