Why it Matters

The U.S. is moving to open the ocean floor to commercial mining — and Congress is only now beginning to grapple with what that means scientifically, environmentally, and geopolitically. The House Science, Space and Technology Committee's deep-sea mining hearing lands as the Trump administration is fast-tracking environmental reviews, NOAA is actively processing exploration license applications, and China is reportedly operating research vessels beyond their assigned zones in international waters. The science and regulatory frameworks needed to govern what happens on the ocean floor are racing to catch up with commercial and geopolitical reality.

The Policy Landscape Driving the Hearing

The Trump administration has reframed deep-sea mining as a national security and supply chain imperative. A 2025 executive order on offshore critical minerals set the tone, and according to the Stimson Center, that framing has reshaped the global debate — positioning seabed mineral access alongside rare earth supply chains as a strategic priority.

Meanwhile, the international governance structure meant to regulate the ocean floor is faltering. The International Seabed Authority has continued to struggle to finalize a mining code even as commercial operations inch closer to reality. NPR reported in March that the U.S. is pushing ahead unilaterally while other nations negotiate — with The Metals Company aiming to begin commercial operations as soon as next year. Knowable Magazine detailed The Metals Company's application to mine the Clarion-Clipperton Zone — a 6-million-square-kilometer area of international waters — bypassing the ISA framework entirely.

The national security dimension has sharpened further. CNN's investigation found that Chinese research vessels, including the Shi Yan 6, were operating beyond their assigned exploration zones in the Indian Ocean in late 2025 and early 2026 — encroaching into areas assigned to India and Germany — raising alarms about Beijing's strategic positioning on the seabed.

Industry and Advocacy Lobbying the Deep-Sea Mining Hearing

The policy pressure from the private sector has been building steadily. Lobbying disclosures show a range of organizations active on seabed mining and related ocean resource issues in the year leading up to the hearing.

Global Sea Mineral Resources NV filed quarterly lobbying reports through mid-2025, reporting spending of up to $50,000 per quarter on issues tied to polymetallic nodules and the International Seabed Authority. Transocean Offshore Deepwater Drilling Inc. filed multiple reports across the same period. WetStone Holdings Ltd. registered as a new lobbying client in late 2024 and filed reports through the fourth quarter of 2025, with spending reaching $110,000 in some quarters. U.S. Strategic Metals LLC filed reports across all four quarters of 2025 on seabed mining and environmental impact issues.

On the ocean science and conservation side, the Marine Technology Society and Opes Oceani LLC were active through the fourth quarter of 2025 on marine ecosystem and ocean policy issues.

What the Science Shows — and Doesn't

The environmental questions surrounding deep-sea mining remain unsettled. The MiningImpact project — a €25 million, nine-country scientific initiative — is launching six research cruises from 2026 to 2028 specifically to study whether ecosystems in areas slated for mining, including rare abyssal species in the Clarion-Clipperton Zone, can recover after extraction. That research is just beginning as commercial applications are already being filed.

At the international level, the 2026 Our Ocean Conference in Kenya highlighted the tension between economic development and ocean conservation, with nations still debating basic governance frameworks. Pew Charitable Trusts noted that governments face a "shifting global political scene" as the U.S. breaks from the multilateral process.

The Hearing

The Environment Subcommittee of the House Science, Space and Technology Committee will convene the hearing on March 26, 2026. Rep. Scott Franklin (R-FL) chairs the subcommittee; Rep. Gabe Amo (D-RI) serves as Ranking Member. Other members include Reps. Brian Babin (R-TX), David Rouzer (R-NC), Max Miller (R-OH), Jeff Hurd (R-CO), Nick Begich (R-AK), Zoe Lofgren (D-CA), Suzanne Bonamici (D-OR), and Deborah Ross (D-NC).

The hearing's stated focus is the science and technology of deep-sea mining, including potential environmental impacts and economic benefits — a framing that positions it as a fact-finding exercise ahead of what could be consequential legislative decisions about who governs the ocean floor, and on what terms.

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