In the United States v. Aetna Casualty & Surety Co., 1949, the Supreme Court ruled in favor of the U.S government. The case involved a dispute over who should pay for damages caused by an explosion at a torpedo station operated by a contractor insured by Aetna. The explosion resulted in damage to nearby property owned by third parties, and these parties sued both the contractor and its insurer (Aetna) for compensation. However, under its contract with the federal government, any liability arising from such incidents was supposed to be borne solely by the government itself - not passed on to insurers or contractors. The court held that when it comes to contracts between private entities and public bodies like governments or municipalities, terms must be interpreted as they would be among private individuals unless there is clear evidence that another interpretation was intended. As such, even though Aetna had paid out claims related to this incident already due their insurance agreement with their client (the contractor), they were entitled to reimbursement from Uncle Sam because of his contractual obligation towards them.

The dissenting opinion in the case of United States v. Aetna Casualty & Surety Co., argued that the majority's decision to hold sureties liable for unpaid taxes was a misinterpretation of the Miller Act, which requires contractors on federal projects to post payment bonds. The dissent contended that this law was intended only as a safeguard for laborers and materialmen who had direct contractual relationships with prime contractors or subcontractors, not as an instrument for collecting taxes from those parties. They also disagreed with the majority's view that tax claims should be given priority over other debts under common law principles, arguing instead that such prioritization should be determined by specific statutory provisions rather than judicial discretion. Furthermore, they expressed concern about potential negative impacts on future government contracting if sureties were made responsible for their principals' tax liabilities without clear legislative authority.