Does this Court's holding in Mathis v United States apply to determinations under the United States Sentencing Guidelines of whether a prior conviction is a 'controlled substance offense'?

QUESTIONS PRESENTED * Does this Court's holding in Mathis v United States apply to determinations ° under the United States Sentencing Guidelines of Whether a prior conviction ‘ is a "controlled substance offense"? : ; * Does this Court's holding in Class v. United States entitle Petitioner ‘ to challenge the constitutionality of the Statute of conviction on . Direct Appeal? — ; , {