May a Supreme Court statutory interpretation case that was held to apply retroactively in collateral proceedings constitute cause to excuse procedural default for a motion to vacate sentence under 28 U.S.C. Section 2255?

QUESTION PRESENTED May a United States Supreme Court case of statutory interpretation, which was held to apply retroactively in collateral proceedings under circuit precedent, constitute cause to excuse procedural default for a motion to vacate sentence under 28 U.S.C. Section 2255? u PARTIES Robert L. Ignasiak, Jr. (“Dr. Ignasiak”) is the Petitioner; he was the defendant-appellant below. The United States of America is the Respondent; it was the plaintiff-appellee below.