Massachusetts Mutual Life Insurance v. Litman

reversing bankruptcy court ruling that disallowed a proof of claim based on a default judgment because default judgment is enforceable in New York | “[ajbsent a Supreme Court decision to the contrary, district courts are compelled to follow the mandates of appellate courts” | Bankruptcy court in passing on objection to claim required under 28 U.S.C. § 1738 to give preclusive effect to state court default judgment | default judgment against debtor, who subsequently filed bankruptcy, precluded bankruptcy court from disallowing claims | default judgment in State Court binding in bankruptcy ease