In a January 25, 2021 Order, the Supreme Court of the United States invited the Acting Solicitor General to file a brief in New Hampshire v. Massachusetts (concerning the dispute between the two states regarding Massachusetts’ COVID-19 personal income tax sourcing regulation) to “express[ ] the views of the United States” in the matter. New Hampshire commenced the lawsuit last year, asking the Supreme Court to exercise its original jurisdiction to enjoin Massachusetts from enforcing…