Aubrey L. McNeely, Sr., and Royce Lee Fowler appeal their convictions and sentences for bank robbery and post office robbery in violation of 18 U.S.C. §§ 2113 (1988 & Supp. IV 1992) and 2114 (1988) and for using a firearm in violation of 18 U.S.C. § 924(c)(1) (Supp. IV 1992). In addition, McNeely appeals his conviction for tampering with a .witness in violation of 18 U.S.C. § 1512. Both men pleaded guilty to all the mentioned offenses. We affirm.
McNeely and Fowler claim the District Court
1
erred in denying their motion to sever trial of the post office robbery charge from the bank robbery charge. We disagree. We defer to the District Court in reviewing the denial of the motion to sever for abuse of discretion.
United States v. Foote,
In any event, when McNeely and Fowler entered valid guilty pleas, they waived all nonjurisdictional defects and defenses.
United States v. Schmitz,
McNeely and Fowler attack their sentences on constitutional grounds, contending there is no rational basis for United States Sentencing Guidelines § 2B3.1(b)(l), which provides for a two-level enhancement to the base offense level for robbery of a financial institution or post office. See United States Sentencing Commission, Guidelines Manual, § 2B3.1(b)(1) (Nov. 1992). We cannot say this sentencing enhancement, which reflects both the seriousness of the offense and past practice, lacks a rational basis. See id. App. C, amend. 110, at 45. Thus, appellants’ claim must fail.
McNeely argues that the District Court erred in denying his motion, made before the imposition of sentence, for leave to withdraw his guilty plea. He claims his plea was invalid because he was suffering from a mental disease or defect due to hypoglycemia resulting from untreated diabetes. We review the District Court’s denial of McNeely’s motion to withdraw his plea for abuse of discretion.
See United States v. Morrison,
The discretion of the District Court to allow withdrawal of a plea before sentencing may be exercised upon a showing by the defendant of a “fair and just reason.” Fed.R.Crim.P. 32(d);
see United States v. Abdullah,
In Dalman, the defendant claimed that he was under the influence of heart medication at the time he pleaded guilty and that the medication rendered him incapable of knowingly and intelligently entering his guilty plea. Id. at 538. Our court found no evidence in the record to show that the defendant was not in possession of his faculties at the plea hearing and noted that he engaged in a lengthy colloquy with the court regarding the details of the charges. Id. at 539. Therefore, we rejected his “after-the-fact” claim that the heart medication affected his capacity to enter a guilty plea. See id. at 539.
Similarly, McNeely engaged with the District Court in a detailed discussion
of the
charges, admitting that he robbed the post office and the bank and talked with another party about killing a witness. He carried on a cogent colloquy with the court, repeatedly responding that he understood what was transpiring. It was only long after the fact, when the court heard McNeely’s motion for leave to withdraw his plea, that McNeely claimed he was not aware of anything that transpired when he entered his plea. McNeely has made no showing that his untreated diabetic condition rendered him incapable of knowingly and intelligently entering a plea of guilty.
See id.,
*889
We decline to address McNeely’s claim of ineffective assistance of. counsel. Such claims first should be presented to the District Court pursuant to 28 U.S.C. § 2255,
United States v. Thompson,
The challenged convictions and sentences are affirmed. MeNeely’s motion to supplement the record is denied.
Notes
. The Honorable George Howard, Jr., United States District Judge for the Eastern District of Arkansas.
