Should there be a statute of limitations in instances of child sexual abuse?

We’ve been talking about Dennis Hastert in my last Q and he couldn’t actually stand trial for the molestation because it was past the statute of limitations. Since most victims of child sexual abuse often don’t confront for themselves the consequences of the abuse or tell others until much later, should the statute be lifted for child sexual abuse? What about rapists of adults as in the Bill Cosby cases?