of Insurance Corp. of Ireland v. Compagnie des Bauxites de Guinee, 456 U.S. 694 (1982) the United States Supreme Court decided that when a court orders a party to produce proof on a certain point, and that party refuses to comply with the court's order, the court may deem that refusal to be a waiver of the right to contest that point and assume that the proof would show whatever the opposing party claims that it would. In that court case, the defendant had argued that the court lacked personal jurisdiction over it but refused a court order to produce evidence of this lack of jurisdiction. The defendant argued that, because the court lacked jurisdiction, the court had no authority to issue an order to show proof of the lack of jurisdiction. The Supreme Court rejected that argument and determined that the defendant's refusal to comply waived the right to contest jurisdiction, just as if it had never contested jurisdiction at all. Illegal waiver or agreement In US states such as California, a waiver is not lawful when it is contrary to an express provision of law, its implicit policy, or good morals. Furthermore, one cannot waive responsibility for violation of law, willful injury to a person or property of another, for fraud, or waive their residential tenant rights. See also Disclaimer Due process Estoppel Illegal agreement Loan waiver Tort reform Waiver and forfeiture References Contract law Civil procedure Equitable defenses Copyright law