Why It Matters

The Senate Environment and Public Works Subcommittee on Clean Air, Climate, and Nuclear Innovation and Safety held a congressional hearing on nuclear energy legislation on May 20, covering three bills aimed at cutting construction costs, streamlining environmental reviews, and modernizing uranium enrichment licensing. The Trump administration has aggressively backed nuclear expansion through executive orders, making the hearing a legislative vehicle to codify that agenda, but a key witness raised concerns about reduced Nuclear Regulatory Commission (NRC) transparency that cut against the hearing's otherwise unified tone.

The Big Picture

The hearing examined the Build Nuclear with Local Materials Act, a discussion draft of the Recharge Act, and a discussion draft of the Enrichment Licensing Modernization Act. The bills collectively address nuclear construction costs, brownfield site deployment, and a domestic uranium enrichment capacity that the U.S. currently lacks at scale.

The country imports roughly 80 percent of its enriched uranium, with about 20 percent still coming from Russia despite a ban set to take full effect in 2028. The Trump administration has invested $2.7 billion in domestic enrichment and issued executive orders mandating that three pilot reactors achieve criticality by July 4, 2026. Congress, in turn, is working to give that agenda a statutory foundation. The bipartisan ADVANCE Act, signed into law in a prior Congress, established the regulatory modernization framework these bills are designed to build upon.

What They're Saying

The hearing was notably collegial, with both the Republican chair and Democratic ranking member co-sponsoring the materials bill. But the most substantive tension emerged from the witnesses themselves.

Loris argued that nuclear-grade concrete can cost 50 percent more than commercial-grade equivalents, with some components running 50 times more expensive, not because of meaningful safety differences but because of supplier scarcity and documentation burdens. He pointed to TerraPower's Natrium Reactor in Kemmerer, Wyoming, which received its construction permit nine months ahead of schedule and 11 percent under budget, as evidence that regulatory reform is already working.

Adam Stein, Director of Nuclear Energy Innovation, The Breakthrough Institute, testified that quality assurance costs alone add roughly 35 percent to nuclear plant costs, according to the NRC's own rulemaking record. He also flagged that the NRC currently has approximately 70 ongoing rulemakings, calling it "a huge change from the past," but cautioned that the agency's reform trajectory is constrained by outdated statutory language in the Atomic Energy Act that only Congress can change.

White offered the sharpest moment of the hearing in his closing remarks, warning that the NRC has recently stopped publishing all commission votes. "It makes it harder to understand what the commission is doing," he said. "While I would love to trust that the NRC is doing great work, it's always good to be able to verify that." Sen. Cynthia Lummis (R-WY), the subcommittee chair, responded warmly: "The transparency that you advocated for is something that government owes its people."

Political Stakes

The hearing put Sen. Shelley Moore Capito (R-WV), who sponsored the ADVANCE Act, in a position to celebrate its implementation while pushing for further action. She noted that the current NRC commission appeared to be "cleaning out the cobwebs" compared to prior periods of stagnation, and all three witnesses agreed the agency's culture has shifted toward enabling deployment. For Kelly, co-sponsoring nuclear legislation alongside a Republican chair while serving as a Democrat in a competitive state gives him a tangible bipartisan credential. His Enrichment Licensing Modernization Act, still a discussion draft, would allow pre-license construction of enrichment facilities while requiring developers to submit remediation plans, a provision White endorsed as "an additional public check."

The Trump administration's posture is broadly aligned with the bills' goals. Its executive orders directed the DOE to expand domestic uranium enrichment and gave the NRC an 18-month deadline to act on industry applications. Legislation that codifies those goals into statute would outlast any single administration, which is precisely what Sen. Lummis's separate Strengthening American Nuclear Energy Act of 2026 is designed to accomplish.

White pushed back on the Recharge Act's approach to environmental review, arguing that a blanket legislative categorical exclusion for all advanced reactors at brownfield sites "could be overly broad" and risks limiting public engagement. He suggested the bill could instead direct the NRC to develop more targeted exclusions through rulemaking, preserving stakeholder input. Stein also raised a structural concern: seven ongoing NRC rulemakings may overlap with the bills under consideration, but reduced transparency in the agency's engagement with the Office of Information and Regulatory Affairs makes it unclear whether the legislation would be duplicative or additive.

The hearing also exposed a gap in the Recharge Act's drafting. When Lummis asked whether building a nuclear facility on a brownfield site would relieve the original polluter of liability, neither White nor Loris could give a definitive answer. Loris said liability "could or could not be transferred depending on how the remediation plan would be defined," a response that signaled the discussion draft needs further legal development before it moves to markup.

What's Next

Senators have until 5 p.m. on June 3 to submit written questions for the record, with witness responses due by June 17. The two discussion drafts, the Recharge Act and the Enrichment Licensing Modernization Act, are expected to be refined based on today's testimony before formal introduction. The Build Nuclear with Local Materials Act, which already has a bill number, is the furthest along and most likely to advance first. The July 4, 2026, deadline for the Trump administration's pilot reactor criticality program adds urgency to the broader legislative timeline.

The Bottom Line

Bipartisan agreement on nuclear necessity is real, but the path from discussion drafts to enacted law runs through unresolved questions about liability, regulatory overlap, and whether the NRC's accelerating pace of change is being matched by sufficient transparency.

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