Corner pleaded guilty to possessing more than five grams of cocaine base, with intent to distribute. He was sentenced to 188 months imprisonment, as called for by the Sentencing Guidelines because he had a previous conviction. He appealed, contending that the trial judge is entitled to disagree with the Guideline and impose a lesser sentence. Is that argument correct? [United States v. Corner, 598 F.3d 411, 7th Cir. (2010)]