The Nuclear First-Strike Security Act of 2025 aims to control the use of funds for initiating nuclear strikes by the United States. Its main goal is to ensure that any decision to conduct a first-use nuclear strike is carefully considered and justified, thereby promoting accountability and reducing the risk of unnecessary nuclear conflict. The key provisions of this legislation include a limitation on the use of appropriated funds for first-use nuclear strikes. Specifically, the President must determine that such a strike is in the best interests of the United States.