NNSA Infrastructure Improvements Act of 2025

S 2176, the NNSA Infrastructure Improvements Act of 2025, requires the National Nuclear Security Administration (NNSA) to submit annual reports to Congress starting in 2026. These reports must detail infrastructure investment plans for the NNSA’s nuclear stockpile, global security, and naval propulsion missions across three timeframes: 5 years, 6-15 years, and 16-25 years. Each report must include cost estimates, schedules, workforce impacts, environmental review status, and progress updates for all projects. The bill directly affects the NNSA and Congress by mandating structured transparency about infrastructure needs, without authorizing new funding or changing existing programs.