Does the Due Process Clause bar criminal liability and sentencing enhancements based on post-conduct agency guidance lacking statutory authority?

1. Does the Due Process Clause bar crimin al liability and sentencing enhancements based on agency guidance issued after the alleged conduct, especially when lacking statutory authority, as reinforced by Loper Bright Enterprises v. Raimondo ? 2. Must courts calculate loss under U.S.S.G. § 2B1.1 based on actual financial harm to ensure sentencing uniformity across circuits, particularly given stark disparities in fraud prosecutions nationwide? 6