Whether Johnson v. United States, 135 S. Ct. 2551 (2015), invalidated U.S. Sentencing Guidelines § 4B1.2(a)---the career offender guideline's residual clause---as applied to a case on collateral review challenging a pre-Booker mandatory sentence enhancement

QUESTIONS PRESENTED FOR REVIEW Whether Johnson v. United States, 135 8. Ct. 2551 (2015), invalidated U.S. Sentencing Guidelines § 4B1.2(a)---the career offender guideline's residual clause---as applied to a case on collateral review challenging a preBooker mandatory sentence enhancement. Whether a motion under 28 U.S.C. § 2255 filed within one year of this Court's decision in Johnson v. United States, 135 S. Ct. 2551 (2015), on grounds that the residual clause under U.S. Sentencing Guidelines § 4B1.2(a) is no longer valid for pre-Booker mandatory sentence enhancements, is timely under 28 U.S.C. § 2255(f). Whether a conviction for armed robbery under 18 U.S.C. §§ 21138(a) and (d), is a crime of violence for purposes of U.S. Sentencing Guidelines § 4B1.2(a). ii