Jorge Ortiz Salazar, federal prisoner # 42899-018, pleaded guilty in 2005 in the Middle District of Florida to possession of five kilograms or more of cocaine with intent to distribute while aboard a vessel subject to U.S. jurisdiction and was sentenced to 135 months in prison. He did *616 not appeal, and he unsuccessfully sought relief via a 28 U.S.C. § 2255 motion. He now appeals the district court’s dismissal of his 28 U.S.C. § 2241 petition. Finding no error, we affirm.

The primary vehicle for challenging federal custody is a motion under § 2255. Tolliver v. Dobre, 211 F.3d 876, 877 (5th Cir. 2000). A § 2241 petition that attacks custody resulting from a federally imposed sentence may be entertained under the “savings clause” of § 2255(e) if the petitioner establishes that the remedy provided under § 2255 is “inadequate or ineffective” to test the legality of his detention. Id. at 878. Under our savings clause test, Salazar must present a claim “(i) that is based on a retroactively applicable Supreme Court decision which establishes that he may have been convicted of a nonexistent offense and (ii) that was foreclosed by circuit law at the time when the claim should have been raised in his trial, appeal, or first § 2255 motion.” Reyes-Requena v. United States, 243 F.3d 893, 904 (5th Cir. 2001).

Salazar’s arguments regarding the jurisdiction of the sentencing court and his innocence of the offense do not satisfy the savings clause as they are not based on a retroactive Supreme Court decision demonstrating that he was convicted for conduct that did not constitute a crime. See Jeffers v. Chandler, 253 F.3d 827, 831 (5th Cir. 2001). Accordingly, the judgment of the district court is AFFIRMED.