Has the Sixth Circuit erred by creating a novel doctrine that says, to avoid plain-error review, a criminal defendant must object after the sentencing court expressly rejects his express argument about the application of the Sentencing Guidelines?

QUESTION PRESENTED Has the Sixth Circuit erred by creating a novel doctrine that says, to avoid plain-error review, a criminal defendant must object after the sentencing court expressly rejects his express argument about the application of the Sentencing Guidelines? ii