Federal inmate Larry Darnell Keeper appeals the district court’s 1 order denying his 28 U.S.C. § 2241 petition challenging the constitutionality of his 1996 state conviction and the resulting detainer. Having carefully reviewed the parties’ briefs, the record, and the applicable law, we hold that the district court correctly concluded Keeper’s claims are procedurally defaulted, and Keeper failed to show cause and prejudice to excuse the default, or that a miscarriage of justice would result from the failure to consider the defaulted claims. See Moore-El v. Luebbers, 446 F.3d 890, 896 (8th Cir.), cert. denied, 549 U.S. 1059, 127 S.Ct. 673, 166 L.Ed.2d 525 (2006); Ivy v. Caspari, 173 F.3d 1136, 1140 (8th Cir. 1999). We thus affirm under 8th Cir. R. 47B.