You have requested our opinion as to whether Zora J. S~ (Zora) can be considered "not
                  married" based on a Haitian divorce and thus entitled to Title II benefits as the
                  surviving divorced spouse of the deceased number holder (NH), Andre M. S~. For the
                  reasons stated below, we believe Zora is "not married" for purposes of entitlement
                  to Title II benefits as the surviving divorced spouse of the deceased NH.
               
               A. Factual Background
               Zora married the NH in February 1954 in Arizona, and the parties were divorced in
                  May 1964 in Texas. In October 1966, Zora married James C. S~ in Maryland. On June
                  26, 1975, Mr. S~ obtained a divorce in Haiti, while both parties were domiciled in
                  Maryland. Zora provided SSA with a certified copy of the divorce and stated she always
                  assumed the divorce was valid. In recent contacts with SSA, Zora stated that after
                  she and Mr. S~ were separated, he informed her he wanted a divorce (she did not remember
                  when this occurred). Zora told Mr. S~ she could not keep him in a marriage he didn't
                  want, so she assumed he would get a divorce. Mr. S~ was in the military at the time
                  and told Zora he would be leaving the country. Zora stated she did not participate
                  in the divorce proceeding in Haiti and was later notified of the divorce when she
                  received a copy of the Haitian decree in the mail. However, the divorce decree indicates
                  in French that both parties were legally represented "by attorneys of their choice."
                  Zora did not receive any money or property settlement from the divorce. She has not
                  communicated with Mr. S~ since the time of the divorce, but was informed he subsequently
                  remarried. Zora never remarried. Mr. S~'s earnings record shows no activity since
                  1982 and his current whereabouts are unknown. Zora is 65 years old and domiciled in
                  Colorado. She applied for benefits in December 1999.
               
               B. Analysis
               To qualify for widow's insurance benefits as a surviving divorced wife, section 202(e)(1)
                  of the Social Security Act provides, inter alia, that the surviving divorced wife
                  must meet the following:
               
               (A) is not married,
               (B) (i) has attained age 60, . . .
               (C) (i) has filed application for widow's insurance benefits . . .
               In the present case, the validity of the divorce obtained in Haiti by Zora's second
                  husband (Mr. S~) is the key to determining whether she is eligible for widow's insurance
                  benefits on her first husband's Social Security account. Neither the Act nor the Commissioner's
                  regulations specify to what law the Commissioner should refer in determining whether
                  a divorce decree has validly terminated a marriage for purposes of section 202(e)(1).
                  Based on our review of OGC opinions, however, we believe you have reasonably assumed
                  that the Commissioner should apply the law of the state in which the claimant is domiciled
                  at the time she applied for Title II benefits, i.e., Colorado. See Memorandum, Hugh M~, SSN: ~ Validity of Haitian Divorce - Maryland, CC III (Ho) to
                  RC, SSA, June 13, 1985 (copy attached). Would Colorado look to its own law, or to
                  the law of the state where the parties were domiciled at the time of the divorce (i.e.,
                  Maryland)? This issue is moot, since the case law of both Colorado and Maryland would
                  result in the same findings.
               
               The validity in the United States of a divorce decree from a foreign country is not
                  governed by the full faith and credit clause of the United States Constitution, but
                  by the common law doctrine of comity. Comity permits recognition of judgments of courts
                  of foreign countries, with due regard both to international duty and convenience,
                  and to the rights of American citizens. Under comity, a divorce decree granted in
                  a foreign country by a court having jurisdiction will generally be given full force
                  and effect in this country. The test of jurisdiction, however, is the test ordinarily
                  applied in the United States, rather than the divorcing country. Thus, the majority
                  of states will not recognize a foreign divorce, regardless of its validity in the
                  nation awarding it, unless at least one of the spouses was a good faith domiciliary
                  of the foreign nation at the time the divorce decree was rendered. See Annotation,
                  Domestic Recognition of Divorce Decree in a Foreign Country and Attacked for Lack
                  of Domicile or Jurisdiction of Parties, 13 A.L.R. 3d 1419 (1967).
               
               Colorado and Maryland courts apparently have not decided the jurisdictional validity
                  of a divorce decree from a foreign country. The Colorado Supreme Court, however, has
                  held that the court of another state (Nevada) in which neither party to the divorce
                  suit was domiciled had no jurisdiction to render a binding divorce decree. See  Koscove v. Koscove, 156 P.2d 696, 698 (Colo. 1945); see  also Viernes v. District Court In And For Fourth Judicial Dist.,  El Paso County, 509 P.2d 306, 310 (Colo. 1973) (mere fact that serviceman was stationed in Colorado
                  for 90 days did not establish Colorado domicile for purposes of divorce jurisdiction);
                  In Re Marriage  of Wilson, 653 P.2d 85, 86 (Colo. App. 1982). Similarly, the Maryland Court of Appeals has
                  found that a Nevada divorce decree was invalid where the wife who obtained the divorce
                  had not acquired bona fide domicile in Nevada. See Staley v. Staley, 248 A.2d 655, 659 (Md. 1968); see also Madaio v. Madaio, 259 A.2d 524 (Md. 1969). In the instant case, neither Mr. S~ nor Zora were domiciled
                  in Haiti at the time of the divorce proceeding. Therefore, we believe both Colorado
                  and Maryland would find the Haitian divorce decree is not valid.
               
               The remaining issue in this case is whether the principles of estoppel pose a bar
                  to challenging the validity of the Haitian divorce, thereby rendering Zora "not married"
                  for Social Security purposes. In Boyd v. Boyd, 189 P. 608 (Colo. 1920), the Colorado Supreme Court reversed a lower court's decision
                  to annul a divorce decree where the evidence showed that the plaintiff-wife's name
                  was forged on the county court papers filed in the divorce action. Because of the
                  circumstances in which the plaintiff-wife was now bringing suit, however, the Court
                  stated that:
               
               Motive is immaterial in a suit involving property rights only, but in an action to
                  set aside a divorce where there has been a remarriage, something more than property
                  rights is involved; conscience, good faith, honesty of purpose and reasonable diligence
                  are required and the doctrine of laches, estoppel, and acquiescence prevails.
               
               Id. at 609 (citations omitted). The Court found that the plaintiff-wife knew of the divorce
                  decree as early as September 1911, the month her husband obtained the divorce, or
                  at least before the husband remarried in December 1911. The Court further noted the
                  plaintiff-wife acquiesced in the decree and even accepted alimony until her suit was
                  filed in July 1914. Because of these facts, the Court applied the doctrine of laches,
                  estoppel, and acquiescence in refusing to let the plaintiff-wife contest the validity
                  of the divorce decree.
               
               Similarly, in In Re Marriage of Lockwood, 857 P.2d 557 (Colo. App. 1993), the Colorado Court of Appeals ordered the trial
                  court to consider the defendant-husband's equitable defenses of laches and estoppel.
                  The court noted the equitable defenses raised by the husband were based in part on
                  the plaintiff-wife's knowledge of the divorce, her statement that she did not contest
                  it, her inaction over the years, and the husband's remarriage. Id. at 561. See also Oakley v. Oakley, 493 P.2d 381 (Colo. App. 1972) (applying principles of estoppel in finding Mexican
                  divorce valid as to parties); Memorandum, Estoppel - Mexican Divorce Decree - Colorado,
                  CC VIII (B~) to RC, SSA, June 10, 1985 (copy attached).
               
               Where the factual situation has merited it, Maryland also has applied the defense
                  of laches in a suit involving an attempt to set aside a divorce decree obtained by
                  a spouse who lacked the necessary residence requirements that would give the divorce
                  court jurisdiction. In Pryor v. Pryor, 213 A.2d 545 (Md. 1965), the plaintiff-wife brought suit to strike out a Maryland
                  divorce decree on jurisdictional grounds. In affirming the trial court's dismissal
                  because of laches, the Court noted the plaintiff-wife knew of the divorce the year
                  it was granted and waited almost 13 years to bring suit. In addition, the husband
                  had remarried shortly after the divorce was granted and the second wife lived with
                  the husband relying on the divorce decree as establishing the validity of her marriage.
                  Id. at 547-49.
               
               In the instant case, the Haitian divorce was granted almost 25 years ago. Although
                  Zora did not receive any property or money as a result of a divorce settlement, she
                  consented to the divorce and has always assumed the divorce decree was valid. Furthermore,
                  during the time period in which Zora has acquiesced to the divorce decree (and continues
                  to acquiesce), a remarriage has taken place. Considering these circumstances, it is
                  our opinion that a Colorado or Maryland court probably would apply the doctrine of
                  laches and/or estoppel and bar Zora from contesting at this late date the validity
                  of the Haitian divorce decree. The POMS also supports the application of estoppel
                  in this case. As pertinent here, a party may be estopped to deny the validity of a
                  divorce, if she "otherwise accepted or acted in recognition of the decree as valid
                  (e.g., knew of the divorce and allowed it to stand unchallenged for a long time)."
                  POMS GN
                     
                     00305.175A.2.e.
               Case law adopted by SSA as its official position, however, suggests that SSA may challenge
                  the validity of an invalid divorce even if a party is estopped from doing so. See Slessinger  v. Secretary of Health and Human Services, 835 F.2d 937 (1st Cir. 1987); SSR 88-15c. In Slessinger, the claimant sought to have SSA recognize a Dominican Republic divorce decree purporting
                  to end her marriage to her second husband so that she could be considered to be "not
                  married" and entitled to mother's benefits on the earnings record of her deceased
                  first husband under section 202(g)(1) of the Act. Applying the law of Rhode Island,
                  SSA refused to recognize the foreign divorce decree and denied her claim. The court
                  of appeals agreed with the district court's affirmation of SSA's decision. Applying
                  the law of Rhode Island and Massachusetts, the court held that the principle of estoppel
                  did not prevent SSA from challenging an invalid foreign divorce decree because the
                  Agency was not a party to the divorce.
               
               Id. at 941. Thus, under SSR 85-15c, SSA may collaterally attack the validity of a divorce
                  and find that a claimant remains married.
               
               SSR 85-15c suggests that SSA may be able to challenge Zora's Haitian divorce from
                  Mr. S~ and deny her claim for benefits on her first husband's account because Zora
                  would be viewed as still married to Mr. S~. The Slessinger court, however, apparently applied equitable principles under a particular set of
                  facts to determine whether SSA could challenge a foreign divorce decree in accordance
                  with relevant State law: "No . . . principles of estoppel apply to the Secretary.
                  The Secretary has derived no benefit from the decree that would render it inequitable
                  for the Secretary to contest the decree. It would be an odd rule that would require
                  the Secretary to give effect to an otherwise invalid foreign divorce decree (even,
                  hypothetically, one obtained for the sole purpose of re-establishing an entitlement
                  to mother's insurance benefits) merely because a participant in the divorce would
                  be estopped from a collateral challenge." Id. at 941 (emphasis added). Thus, we believe a Colorado or Maryland court would look
                  at the circumstances of a specific case in determining whether a person who was not
                  a party to a divorce (such as SSA), and who did not benefit from it in any way, may
                  challenge the divorce decree.
               
               While SSA's challenge of an invalid divorce was upheld in Slessinger, the instant
                  case is distinguishable. In Slessinger, there was no indication that either of the
                  parties to the invalid divorce had remarried in reliance on that divorce; here, Mr.
                  S~ has remarried. Further, the time frame was very different in Slessinger. In that
                  case, the claimant applied for mother's insurance benefits on the account of her first
                  husband, who died on November 29, 1981. She married her second husband on October
                  22, 1983, and divorced nine months later on August 6, 1984. She applied for benefits
                  on September 24, 1984. This time frame suggests the claimant obtained a divorce from
                  her second husband solely for the purpose of obtaining benefits on the account of
                  her first husband. Here, Zora and Mr. S~ obtained their invalid divorce more than
                  24 years before she applied for benefits. Thus, we believe the circumstances in the
                  instant case raise equitable considerations that are more favorable toward a recognition
                  that the claimant is "not married" than the facts in Slessinger. See Memorandum, Validity of divorce - Dominican Republic; Estoppel to deny Divorce Ralph
                  R. D~, ~, RCC X (Gilbrough) to AAC/MOS, SSA, December 17, 1999 (copy attached).
               
               In conclusion, while SSA may challenge an invalid divorce decree even where the parties
                  are estopped from doing so, it may not collaterally attack a divorce in all situations.
                  A Colorado or Maryland court would apply equitable principles, which in the instant
                  case weigh in favor of the claimant such than an attack would likely not be upheld
                  if challenged. For the reasons discussed above, it is our opinion that Zora should
                  be considered "not married" for purposes of entitlement to Title II benefits as the
                  surviving divorced spouse of the deceased NH, Andre M. S~.