You are a judge. You have dealt with a particular criminal defendant three times in the past and have convicted him each time on serious felony matters. He appears in front of you on yet another felony matter. He is convicted by the jury and comes in front of you for sentencing. According to the Sentencing Guidelines, you can sentence him to a maximum of 20 years. You sentence him to 30 years to make a point. Is this permissible? Why or why not?