file charges and have him deported or something like that.

but i would say it would be too late to bring rape charges, the sister still can but usually you have to collect evidence within a certain time frame. so the case will be weak, but that doesn't mean I wouldn't do it.

I would still do it, just ot drag that ass wipe through the whole process, unfortunately she will be dragged through it as well.

also which state is she in and how old? if she is under aged (by statute) he will be charged with statutory rape.