In January 2025, President Trump issued a memo outlining plans for “the Iron Dome for America,” a multi-layered missile defense shield intended to defend the United States “against ballistic, hypersonic, advanced cruise missiles, and other next-generation aerial attacks from peer, near-peer, and rogue adversaries.” The effort has since been rebranded as “Golden Dome for America.” In a new report, “Missing the Mark: Why Golden Dome is Bad for American Taxpayers,” Taxpayers for Common Sense examines the program’s potential costs, viability problems, strategic risks, and conflict-of-interest concerns. This fact sheet focuses on cost and viability problems.