 As to the first argument, although a guilty plea may properly be considered to support a sentence mitigation for acceptance of responsibility, the Sixth Amendment is violated when failure to plead guilty is treated as an aggravating circumstance.As to the second, it is a fair argument for the prosecution to say that an allocution of remorse is unsworn and uncrossed, but the Fifth Amendment is violated when the defendant is denied a charge that limits the Fifth Amendment waiver to that which is said in the allocution and the jury is invited to consider more generally that the defendant declined to testify.