The Drones for America Act seeks to bolster the national security interest in securing the supply chain for unmanned aircraft systems (UAS) within the United States. Congress believes that imposing tariffs on UAS and their components from the People's Republic of China will incentivize domestic and allied sourcing, thereby promoting resilient supply chains and safeguarding the domestic UAS industry. The bill amends the Harmonized Tariff Schedule of the United States (HTS) to introduce new, additional ad valorem duties on unmanned aircraft and their parts imported from China. These duties will increase incrementally over four years, starting at 30% in the first year and rising to $100 each + 50% after four years. These additional duties will apply even if the products are otherwise eligible for temporary duty exemptions or reductions. Furthermore, the legislation establishes strengthened rules of origin, prohibiting the entry of unmanned aircraft into the U.S. customs territory if they contain specific components manufactured in China, or if their parts were manufactured in China. This prohibition will take effect for unmanned aircraft on January 1, 2028, and for parts on January 1, 2031. An exemption exists for certain UAS authorized by the Federal Aviation Administration before January 1, 2026, provided they are not manufactured by a covered foreign entity or in a foreign adversary country. To support these objectives, the bill creates a Secure Unmanned Aircraft Systems Trust Fund in the Treasury, funded by the new duties collected on China-made UAS. This fund will finance a grant program administered by the Secretary of Homeland Security. The grant program will provide funding to: First responders, farmers and ranchers, and critical infrastructure providers to purchase or lease secure UAS and support their operational capabilities. Entities that manufacture UAS components in the United States for workforce development and to increase domestic manufacturing capacity. The program prioritizes funding, allocating up to 60% for first responders, 20% for farmers and ranchers, 20% for critical infrastructure providers, and 10% for U.S. component manufacturers, ensuring a strategic investment in a secure and robust domestic UAS ecosystem.