This case asks the Supreme Court to interpret the meaning of “covered offense” under Section 404(a) of the First Step Act to determine which crimes fall under its definition, and thus, may be subject to retroactive reduced sentencing. Petitioner Tarahrick Terry pled guilty to possessing with the intent to distribute an unspecified amount of cocaine base (or “crack cocaine”) in violation of 21 U.S.C. § 841(b)(1)(C) in 2008. In 2010, Congress enacted the Fair Sentencing Act, which amended parts of 21 U.S.C. § 841 to adjust the difference in sentencing between crimes involving crack cocaine and those involving powder cocaine. In 2018, Congress enacted the First Step Act, which made the Fair Sentencing Act’s amendments retroactive. Terry, in support of vacatur, argues that violations of Section 841(b)(1)(C) are “covered offenses” under Section 404 of the First Step Act, based on the text of Section 404(a), as well as the statute’s design and history. Adam K. Mortara, as amicus curiae in support of the judgment below, argues that Terry’s offense is not a “covered offense” under Section 404(a) based on a proper construction of the statute and the meaning of the phrases “violation of a Federal criminal statute” and “statutory penalties.” The case has implications for future retroactive sentencing statutory amendments, as well as inmates currently in custody for low-level crack-cocaine offenses before Congress passed the Fair Sentencing Act of 2010.