Castration. Followed by immediate deportation.
Kill him dead.
Prior to imnediate deportation, after castration, a.22 to the brain, followed by cremation. Put the ashes down the sewer drain. Let him float back to Portugal. Make this standard procedure for all illegal alien sex crimes of all types. Do this several dozen times, and the word will get out in the illegal community. Add other offenses, such as drunk driving to the list. In a short time illegal alien crime will diminish substantially.