Insurance Company v. Tweed was a case heard by the United States Supreme Court in 1868. The case involved a dispute between an insurance company and a policyholder, Tweed. The insurance company had issued a policy to Tweed, but refused to pay out the claim when Tweed's property was destroyed by fire. Tweed argued that the insurance company had breached its contract by failing to pay out the claim. The Supreme Court held that the insurance company was liable for the claim. The Court reasoned that the insurance company had a duty to pay out the claim, as it had agreed to do so in the policy. The Court also held that the insurance company was not entitled to any defenses, such as the defense of fraud, as the policy did not provide for such defenses. The Court's decision in Insurance Company v. Tweed established that insurance companies have a duty to pay out claims when they have agreed to do so in the policy. The decision also established that insurance companies are not entitled to any defenses, such as the defense of fraud, unless the policy specifically provides for such defenses.

In Insurance Company v. Tweed, the Supreme Court was asked to decide whether an insurance company could be held liable for a fire that occurred in a building owned by the insured party. The majority opinion found that the insurer had no liability because there was insufficient evidence of negligence on their part and they were not responsible for any damages caused by the fire. However, Justice Field dissented from this decision and argued that under certain circumstances, an insurance company can indeed be held liable if it is proven that they failed to exercise reasonable care in performing their duties as insurers. He reasoned that when an individual pays premiums to insure against loss or damage due to fires, then it is only fair for them to expect some protection from such losses should one occur; thus, if it can be shown through proper investigation and proof of negligence on behalf of the insurer then they should bear responsibility for any resulting damages incurred by their policyholders.