United States v. Labastida-Segura, 396 F.3d 1140 (10th Cir. Feb. 7, 2005) (defendants sentence for unlawful reentry remanded to determine whether district courts mandatory use of United States Sentencing Guidelines in violation of United States v. Booker was harmless error).
http://laws.lp.findlaw.com/10th/041311.html