Whether the determination of a 'serious drug offense' under the Armed Career Criminal Act (ACCA or Act) requires the same categorical approach used in the determination of a 'violent felony' under the Act?

QUESTIONS PRESENTED 1. Whether the determination of a “serious drug offense” under the Armed Career Criminal Act (ACCA or Act) requires the same categorical approach used in the determination of a “violent felony” under the Act? This Court has granted certiorari to resolve this question in Shular v. United States, No. 18-6662. 2. Whether a district court is limited to the elements, or may rely upon non-elemental facts, to find that a defendant has three prior convictions for offenses “committed on occasions different from one another” to sentence a defendant under the increased penalties of the ACCA, § 924(e)(1)? i