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Supreme Court of the United States

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The Supreme Court has denied review of New Hampshire’s lawsuit against Massachusetts seeking to invalidate the latter’s controversial personal income tax sourcing regulation. The Supreme Court’s highly anticipated decision was likely influenced by the acting U.S. Solicitor General’s amicus brief arguing against the Supreme Court taking up the case. The Supreme Court has thus passed on reviewing the broader issue of whether and to what extent a state may impose its personal income tax on…

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…