There are several ways to attack a marital agreement in court. These include lack of volunteerism, lack of scruples and lack of disclosure of assets.  In all U.S. states, it is not permissible to address issues relating to children of marriage, particularly custody and access issues.  The reason is that children`s issues must be decided in the best interests of children.  However, this is controversial: some people think that, as custody disputes are often the worst part of a divorce, couples should be able to settle this in advance.  In 2015, the U.S. Supreme Court granted same-sex marriage the same legal basis as same-sex marriage in the case of Obergefell v. Hodges (decided June 26, 2015). The consequence of the Supreme Court decision is that a pre-marriage contract entered into by a same-sex couple in one state is enforceable in the event of a divorce in another state.  Post-ascendant agreements are similar to marital agreements, except that they are concluded after a couple`s marriage.
 When divorce is imminent, post-uptial agreements are called separation agreements.  Premarital conventions are a matter of civil law, so Catholic canon law does not exclude them in principle (for example. B to determine how property would be distributed among children in a previous marriage after the death of a spouse). In California, a couple may waive their property-sharing (co-ownership) rights through a prior contract.  The agreement may limit sp assistance (although a court may set it aside in the event of a divorce if it considers the restriction to be unacceptable). The agreement can be used as a contract to make a will that requires one spouse to take care of the other in the event of death. It may also restrict inheritance law in the event of death, such as the right to inheritance allowance, the right to execution, the right to take as a predetermined heir, etc.  In California, registered national partners may also enter into a prenup. Post-marriage agreements are treated very differently in California law. Spouses have a fiduciary duty to each other, so pre-marital agreements fall into a particular category of agreements. There is a presumption that the post-parental agreement was obtained by undue influence when a party gains an advantage. Disclosure cannot be abandoned as part of a post-marriage agreement.
[Citation required] Some federal laws apply to conditions that may be included in a pre-marital contract. The Withdrawal Equity Act (REA) of 1984, signed on August 23, 1984 by President Ronald Reagan, reconciled confusion over whether ERISA anticipated state divorce laws, thereby preventing pension plans from complying with court injunctions granting a spouse a portion of the worker`s pension in a divorce decree.  A matrimonial agreement may include exceptions whererightly agrees to revoke all rights against the other`s pension benefits arising from state and federal marriage laws, as in the context of the REA.