In 1980, the Deep Seabed Hard Mineral Resources Act was signed into law. After a brief period of use, primarily for a few exploration permits granted during the Reagan administration, it lay dormant, uncontested, and gathering bureaucratic dust for forty years. Nobody gave it much thought. The International Seabed Authority was established, UNCLOS went into effect, and the United States discreetly stayed out of it all. Because no one was serious enough about deep-sea mining to test it, this arrangement persisted for years.
It’s the end of that quiet time. The Metals Company filed within days to mine 65,000 square kilometers of the Pacific’s Clarion-Clipperton Zone after NOAA announced in late January 2026 that it had finalized a rule consolidating the application process for deep-sea mining permits, cutting environmental review timelines nearly in half. It’s difficult to ignore how well-coordinated the timing felt as you watch that scene play out. The application was received almost immediately after the regulatory window opened.
Contrary to what NOAA’s confidence suggests, the legal basis for all of this is actually worth investigating. The United States contends that it is not required to use the International Seabed Authority because it never ratified UNCLOS. There is a certain blunt logic to that argument. However, it avoids the distinct and more difficult issue of customary international law, which is the idea that non-signatories are bound by certain treaty obligations when those norms have reached a sufficiently broad consensus.
Leticia Carvalho, the Secretary-General of the ISA, stated that no nation has the authority to unilaterally exploit seabed resources outside of the UNCLOS framework. It is genuinely unclear whether that stance would withstand legal challenge in any significant international forum. It’s not a fringe argument, though.
International legal experts believe that the United States is effectively betting that there isn’t a robust enough enforcement mechanism to prevent it. In the short run, that bet is probably right. A mining vessel cannot be boarded by the ISA. The abyssal plain has no coast guard. However, precedent matters, and nations that typically support U.S. stances on resource governance are starting to show unease. Canada in particular, since TMC, a Vancouver-based company, may be in violation of international law simply by participating through its U.S. subsidiary, according to one recent legal analysis.
There are issues with the environmental review process itself. Regulators are essentially being asked to evaluate harm to ecosystems they haven’t thoroughly cataloged, since 80% of the seabed is still unmapped. When caution should be extending the timeline, NOAA’s streamlined procedure, which drew harsh criticism from marine scientists, compresses it. The substrate habitat that took millions of years to stabilize would be destroyed by mining the top four inches of the seafloor. Recovery timelines span human generations in cases where experts think recovery is even feasible.
All of this could proceed without significant legal barriers. The executive branch has shown little interest in slowing down the process, and the 1980 statute gives NOAA just enough paper authority to issue a permit. However, the legal framework that is being used here was not designed to support this burden. Drafted in a different era, it served as a stand-in for a technology that was still in its infancy. It seems less like a legal tactic and more like a gamble, with the ocean bearing all the risk of failure, to use it now to permit commercial extraction throughout an area twice the size of Vancouver Island.
