[MrEdd]

In Arkansas they are treated as adults in sexual matters.
And many other states when the difference between ages is this great.

That is, after all how this became public.
The Duggars delayed reporting this and pulled strings to keep it from being handled by the adult courts to keep Josh out of jail.

So you have a non point.

And, because they pulled strings to keep it from going to court the records were not automatically sealed. That's why all of this was auto be to come out. Manipulating the system prevented the sealing of records which would have automatically happened to protect the girls.

Following the law by all parties would have been a better course, but the Duggar family chose not to.

[Kazan]

In Arkansas they are treated as adults in sexual matters.

Do you have example of a 15-year old sent to prison for sexual assault in Arkansas or anywhere else?

The dirty little secret is that the local DA could have prosecuted Dugger in 2006 and passed on doing so. That statute of limitations in that state is seven years on criminal sexual assault.

[machogirl]

This is an interesting read.
http://www.unh.edu/ccrc/pdf/CV171.pdf

Juveniles Who
Commit Sex Offenses
Against Minors