You have asked what Missouri, Kansas, Iowa, and Nebraska statutes and/or case law
                  provide regarding presumptions of valid marriages, the doctrine of estoppel and in
                  what context it arises, how estoppel applies in the context of bigamous marriages,
                  how the Social Security Administration (SSA) interprets the state's law, and what
                  the POMS provide regarding each state.
               
               ESTOPPEL
               MISSOURI:
               Missouri statute provides that estoppel must be pled as an affirmative defense. Mo.
                  Rev. Stat. § 509.090 (1999). Case law states that "[i]t is generally recognized that
                  a person may be precluded from attacking the validity of a foreign divorce decree
                  if, under the circumstances, it would be inequitable for him to do so." See Sumners v. Sumners 645 S.W.2d 205, 209 (Mo. App. 1983).
               
               Missouri has applied the doctrine of estoppel in several situations. Equitable estoppel
                  was applied to prevent one spouse from claiming an inheritance or interest in the
                  estate of a deceased spouse. See,  e.g., Crane v. Deacon, 253 S.W. 1068, 1072-73 (Mo. 1923). In Littlefield v. Littlefield, 203 S.W. 636 (Mo. App. 1918) the court held that remarriage, perhaps with knowledge
                  that her divorce was invalid, precluded the plaintiff from asserting a claim in her
                  former husband's property. Equitable estoppel prevented a husband from raising a subject
                  matter jurisdiction objection in Yun v. Yun, 908 S.W.2d 787 (Mo. App. 1995).
               
               KANSAS
               Kansas statutes address estoppel in the context of premarital agreements. The statute
                  expressly states that "equitable defenses," including laches and estoppel are "available
                  to either party" in a action asserting a claim for relief under a premarital agreement.
                  Kan. Stat. Ann. § 23-809 (1999).
               
               Kansas also applied the doctrine of estoppel in Martin  v. Martin, 623 P.2d 527 (Kan. App. 1981). The court stated that a litigant who has acquiesced
                  in the judgment of a trial court by assuming the burden or by accepting the benefits
                  of the judgment cannot thereafter appeal from that judgment, but the rule is not strictly
                  applied in divorce cases. When a divorce is not challenged, the remarriage of the
                  appellant does not constitute acquiescence. Id. at 529-30. The Kansas Supreme Court held in Justus v. Justus, 495 P.2d 98 (Kan. 1972), that the former husband was estopped from challenging the
                  validity of the original divorce decree since he had remarried on the strength of
                  it.
               
               IOWA
               Like Kansas, Iowa statute provides for the use estoppel in actions concerning premarital
                  agreements. The statute states, "equitable defenses . . . including laches and estoppel,
                  are available to either party." Iowa Code § 596.11 (1999). Iowa does not require that
                  estoppel be specifically pled so long as the facts lending themselves to the doctrine
                  are in the petition. See Winegard  v. Winegard, 278 N.W.2d 505, 510 (Iowa 1979); Dierking  v. Bellas Hess Superstore, Inc., 258 N.W.2d 312, 314 (Iowa 1977).
               
               Estoppel prevented a common law husband in Iowa from contesting potential jurisdictional
                  defects in his wife's former divorce several years prior because he had prior knowledge
                  of the defects and in fact had helped his wife obtain the divorce decree in question.
                  See  Winegard, 278 N.W.2d at 509-10.
               
               NEBRASKA
               Similarly, Nebraska statute provides, "equitable defenses . . . including laches and
                  estoppel, are available to either party." Neb. Rev. Stat. Ann. § 42-1008 (1999).
               
               Equitable estoppel was also applied in Nebraska to bar a putative father from preventing
                  the adoption of the child where the he and the mother discussed adoption, but no agreement
                  was reached and the father failed to comply with statutory provision which required
                  him to file a notice of intent to claim within five days of the child's birth. See Friehe v. Schaad, 545 N.W.2d 740, 748-49 (Neb. 1996).
               
               PRESUMED VALIDITY OF MARRIAGE
               In Missouri, Kansas, and Iowa an individual's second marriage is presumed valid absent
                  proper rebuttal evidence.
               
               MISSOURI
               Case law in Missouri establishes the presumption of validity for an individual's second
                  marriage. See Sumners, 645 S.W. 2d at 208 citing Carr v. Carr, 232 S.W.2d 488, 489 (Mo. 1950). In situations where a first spouse contests the
                  validity of a second marriage, he or she has the burden of rebutting the presumed
                  validity of the second marriage. The burden of proof is "the most cogent and satisfactory
                  evidence"which is "strong, distinct, and conclusive." See Lucas v. Lucas, 909 S.W.2d 365, 369-70 (Mo. App. 1995), citing Carr, 232 S.W.2d at 489 and Estate of Holloway v. Whitaker, 697 S.W.2d 551, 552 (Mo. App. 1985).
               
               KANSAS
               Kansas also presumes a person's second marriage is valid. See  Hawkins v. Weinberger 368 F.Supp. 896, 900 (D. Kan. 1973) citing Harper v. Dupree, 345 P.2d 644 (Kan. 1959). Where two purportedly valid marriages are entered into
                  in good faith, the law will presume the second is valid with the burden on the claimant
                  from the first marriage to rebut that presumption. The burden of proof for rebuttal
                  is clear, strong, and satisfactory which is so persuasive that it leaves no room for
                  reasonable doubt. See  Chandler v. Central Oil, 853 P.2d 649, 652 (Kan. 1993).
               
               IOWA
               In Iowa, there is a strong presumption that the second marriage is valid. The party
                  seeking to rebut the presumption has the burden of proof to present evidence that
                  is strong and persuasive. See   Miller v. AMF Harley-Davidson Motor Co., Inc., 328 N.W.2d 348, 351-52 (Iowa App. 1982); In re Estate of Weems, 258 Iowa 139 N.W.2d 922, 924 (Iowa 1966).
               
               NEBRASKA
               Nebraska statute provides that a properly filed marriage license is presumptive of
                  a valid marriage. Neb. Rev. Stat. Ann. § 42-116 (1999). When the validity of a marriage
                  is attacked by either of the parties, the other party may file a bill or petition
                  requesting that the marriage be affirmed and upon "weight and sufficiency" of proof,
                  the marriage will be declared valid by a decree or sentence of the court and is conclusive
                  unless reversed on appeal. Neb. Stat. Rev. § 42-120 (1999). The burden of proof is
                  on the party who asserts that the marriage is valid. See In re Estate of McCartney v. McCartney, 330 N.W.2d 723 (1983). A presumption of valid marriage arises upon proof of a ceremonial
                  marriage. See McCartney 330 N.W.2d at 724.
               
               SSA'S INTERPRETATION OF STATE LAW
               MISSOURI
               SSA has been a party to lawsuits which interpret state law in several cases. In Missouri,
                  SSA's position that the plaintiff was not the wage earner's widow and, thus, not entitled
                  to widow's benefits was upheld. See Everetts v. Apfel, 63 F. Supp. 2d 1020 (E.D. Mo. 1999). In that case, the plaintiff stated that she
                  was first forced into marriage after she became pregnant as the result of rape. However,
                  she never regarded herself as married and the union was annulled, but she married
                  another man prior to the annulment. Therefore, her second marriage was bigamous and
                  void from the beginning. Thus, her second marriage was not valid and she was properly
                  denied widow's benefits. In another case, two women claimed that their children were
                  entitled to survivorship benefits on the deceased's record. The ALJ was ordered to
                  give the first wife the opportunity to present clear and convincing evidence showing
                  that her divorce not valid. See Riley v. Califano, 498 F.Supp. 589 (W.D. Mo. 1980). Riley states that Missouri recognizes the defense of laches to an attack on the validity
                  of a divorce decree. Riley, 498 F.Supp. at 593.
               
               KANSAS
               As noted above, in Hawkins, 368 F.Supp 896, SSA properly denied the plaintiff's application for widow's benefits
                  because her alleged husband entered into a subsequent ceremonial marriage with another
                  woman. The husband's second marriage enjoyed the presumption of validity over the
                  plaintiff's previous common law marriage. Id. at 898.
               
               IOWA
               In Iowa, in a situation where the couple married, divorced, and ultimately cohabitated
                  again, without another ceremonial marriage, SSA determined that a common-law marriage
                  was established and the wife was awarded widow's benefits upon her husband's death.
                  See  Blessing v. Deere & Company, 985 F.Supp. 886, 890 (S.D. Iowa 1997).
               
               NEBRASKA
               Because Nebraska requires a six month interlocutory period after a divorce before
                  any subsequent marriage, an applicant who violated that provision was properly denied
                  widow's benefits. See   McGuire v. Califano, 440 F.Supp. 1031 (D. Neb. 1977). It was further determined that the ALJ has the
                  power to interpret state law, and the agency is not required to accept the judgment
                  of a lower state court on the issue of widow's status if it appears the state's highest
                  court would take a different position. Id.
               POMS
               The POMS does not specifically address the issue of estoppel for Missouri, Kansas,
                  Iowa, or Nebraska.
               
               BIGAMOUS MARRIAGES AND ESTOPPEL
               With respect to estoppel in the context of a bigamous marriage, all four states have
                  determined that bigamous marriages are void. See Mo. Rev. Stat. 451.030 (1999); Kan. Stat. Ann. § 21-3601(1999); Neb. Rev. Stat. §
                  42-103 (1999); Iowa Code § 595.19 (1999). See also State v. Fitzgerald, 726 P.2d 1344 (Kan. 1986). However, in Iowa, if the parties live together after
                  the death or divorce of the former spouse, the marriage will then be valid. Iowa Code
                  § 595.19 (2) (1999). As discussed above, all four states also apply the doctrine of
                  estoppel.
               
               We hope that this memorandum answers your questions.
               Frank V. S~ III
Regional Chief Counsel
By
               
               Pamela J. M~
Assistant Regional Counsel