On November 4, 2020, the Tax Court issued a Memorandum Opinion in the case Leith v. Commissioner (T.C. Memo. 2020-149). The primary issue before the court in Leith v. Commissioner was whether the petitioner is entitled to IRC § 6015(f) equitable innocent spouse relief to the extent of the tax items attributable to her ex-husband for the years at issue, even though her ex-husband (the intervenor) opposed the relief.