Challenge to advisory sentencing guideline is merely suggested by Supreme Court holding on mandatory sentencing guideline, not compelled by it, so the petition is barred as second/successive.
Raphael Donnell v. United States
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Not written by a barrister. The name was thought up by a second-year American law student sitting in a coffeehouse in Manhattan. Neither an authoritative statement of the law nor legal advice.
Don't rely. Quick work.