What are the implications of a sentencing court's interpretation and application of the Guidelines de novo?

We review a sentencing court's interpretation and application of the Guidelines de novo. United States v. Sloley, 464 F.3d 355, 358 (2d Cir.2006). Findings of fact are reviewed under the clearly erroneous standard. Id. A finding is clearly erroneous if, "although there is evidence to support it, the reviewing court on the entire evidence is left with the definite and firm conviction that a mistake has been committed." Anderson v. Bessemer City, 470 U.S. 564, 573, 105 S.Ct. 1504, 84 L.Ed.2d 518 (1985).

II Ex Post Facto Laws