I think the state law would be 15 years minimum (if convicted). Just guessing, it’ll be multiple charges and he’ll be eventually offered a chance to lessen charges, and just accept 6 years in prison...getting out at 5. At that point, you won’t be able to deport the guy, and he’s here in the US for the rest of his life.
Yes, he’s here for the rest of his life, as are millions of replacements just like him.