Sanchez v. Holder, 614 F.3d 760 (8th Cir. Aug. 2, 2010) (no statutory support for petitioner's argument that the burden of proof rested on the government in this case to prove his conviction of an aggravated felony to disqualify him from eligibility for cancellation of removal).
Note, this case did not cite or discuss Sandoval-Lua v. Gonzales, 499 F.3d 1121 (9th Cir. 2007).