Women's Prison Population JUMPS due to Drug War

Due mostly to the failed war on drugs the US Women's Prison Population has taken a huge jump.

That is too many momma's in jail for smoking a joint. Think about all those sad little kids who wish mommy was there to read them a story at night or a whole myriad of other things that only a mommy can do.
How does this help America?
How does it promote family values?
How does it make anything better?
What problems does this kind of action solve?