The legal arguments could be dividing conservative justices on the court, making it difficult to proceed to oral arguments, according to Ari Peskoe, director of the Electricity Law Initiative at the Harvard Law School Environmental and Energy Law Program. Following the lead of former Associate Justice Antonin Scalia, Associate Justice Clarence Thomas has rarely been willing to recognize the legitimacy of the Dormant Commerce Clause, and newly confirmed Associate Justice Amy Coney Barrett may feel similarly.