Whether Section 2255 is 'inadequate or ineffective' when, at the time of petitioner's initial Section 2255 motion, circuit precedent foreclosed a potential claim, but that precedent has since been overruled by this Court

QUESTION PRESENTED A person in federal custody may challenge the legality of his detention by filing a post-conviction motion under 28 U.S.C. § 2255. Second or successive motions under that statute are typically prohibited. However, Section 2255(e) includes a saving clause that allows a prisoner to petition for a writ of habeas corpus under 28 U.S.C. § 2241 if the Section 2255 remedy is “inadequate or ineffective to test the legality of his detention.” The question presented is: Whether Section 2255 is “inadequate or ineffective” when, at the time of petitioner’s initial Section 2255 motion, circuit precedent foreclosed a potential claim, but that precedent has since been overruled by this Court.