In the 1897 case of American Surety Company v. Pauly, the United States Supreme Court ruled in favor of defendant William Pauly. The dispute arose when a bank failed and went into receivership; its president had been bonded by plaintiff American Surety Company for $20,000 to cover any losses due to his misconduct or negligence. When it was discovered that he had misappropriated funds prior to the bond's issuance, American Surety argued they were not liable as these actions occurred before their contract began. However, Pauly claimed that since the bond covered all losses during its term regardless of when they originated, American Surety should pay up. The court agreed with Pauly’s interpretation and held that while bonds typically only cover future acts from date of issue onwards (known as 'obligations de futuro'), this particular one also included past misconduct ('obligations de praeterito') because it promised indemnity against loss through any act of dishonesty committed at any time during its continuance without specifying whether such acts must occur after execution. This decision set an important precedent regarding sureties' liability for principals' pre-existing fraudulent conduct under fidelity insurance contracts.

In the dissenting opinion for American Surety Company v. Pauly, it was argued that the majority's decision failed to properly interpret and apply the law regarding suretyship contracts. The dissenting justices believed that a surety should not be held liable when their principal debtor defaults on an obligation unless they have explicitly agreed to such terms in their contract of guarantee. They contended that there was no evidence in this case showing that American Surety had made any explicit agreement to cover losses resulting from changes in its principal’s financial condition or business operations after entering into the contract of guarantee with Pauly. Therefore, they disagreed with holding American Surety responsible for paying off debts incurred by its principal due to subsequent adverse changes in his financial situation which were beyond its control and knowledge at time of signing the contract.