NSF dismantling – Democratic senators and House committee leaders have moved to block the National Science Foundation’s plan to dismantle most of the Ocean Observatories Initiative, arguing it was done without warning, without scientific review, and potentially in violation of
For the second straight day. the news is the same: scientists say the Ocean Observatories Initiative is starting to be dismantled before lawmakers were even aware. On Monday. members of Congress pressed the National Science Foundation to reverse course. asking the agency to stop the drawdown of a monitoring system that has spent more than a decade tracking the ocean and producing public data—now set to be pulled from waters off Oregon. Washington. Alaska. North Carolina and Greenland.
The fight is arriving with a clock ticking toward early physical work. Scientists are scheduled to begin pulling the first buoy off the Oregon coast on Tuesday. even as Democratic senators and one Republican sent letters to NSF demanding it halt the dismantling and conduct a thorough review with the marine science community.
At stake is a network of more than 900 ocean sensors built at a cost of $386 million. Over the last decade, lawmakers were told, it has tracked ocean circulation, marine ecosystems, climate change and extreme weather. The monitoring program has also produced data freely available to the public and has informed more than 500 scientific publications. The project was slated to run another 15 to 20 years.
In the plan NSF directed, the agency would remove most of the system’s instruments from waters off Oregon, Washington, Alaska, North Carolina and Greenland by 2027. Scientists have said the decision came without warning and without scientific review.
NSF has framed the shift differently. The independent federal agency established by Congress described the move not as a cancellation but as a “descoping” aligned with a strategy to prioritize “evolving scientific priorities and emerging technologies.” The Trump administration’s proposed 2026 budget had also included a 55% cut to the agency.
Democratic Sen. Jeff Merkley of Oregon called the dispute a constitutional problem—using language that left little room for compromise. “It just seems like this is supreme stupidity and a violation of the fundamental distribution of powers in our Constitution. ” Merkley said. arguing that the program is authorized and funded and that ending it without Congress guiding the change violates the vision “in which the people’s representatives decide what’s done and funded. and the executive branch executes that vision.”.
Merkley and Republican Sen. Lisa Murkowski of Alaska co-led the senators’ letter. It was also signed by Democratic Sens. Edward Markey and Elizabeth Warren of Massachusetts. Tammy Baldwin of Wisconsin. Patty Murray and Maria Cantwell of Washington. Sheldon Whitehouse of Rhode Island. Chris Van Hollen of Maryland and Ron Wyden of Oregon. In the letter. they urged NSF to halt the dismantling and conduct a thorough review. including consultation with the marine science community. before any further action.
The senators warned of direct consequences for coastal safety. “Eliminating most of this complex ocean monitoring system threatens the safety of our coastal communities while undermining our nation’s ability to monitor coastal environments, marine currents, and extreme weather events,” they wrote.
House Democrats pressed even harder, accusing the agency of acting improperly and demanding it stop immediately. The House Science. Space and Technology Committee and the House Natural Resources Committee sent a joint letter to NSF demanding the agency “cease this expensive. destructive. and — crucially — illegal action at once.” The letter was led by Reps. Zoe Lofgren and Jared Huffman of California, the top Democrats on their respective committees. It was signed by 23 Democratic members from each panel.
NSF has pointed to another driver for the decision. In a June 3 statement. the agency said its approach drew in part on a 2025 National Academies report on the future of ocean science. “NSF remains committed to ocean science and will continue working with the scientific community on high-priority research objectives,” it wrote.
But the House Democrats’ complaint centers on the timing and the process—especially whether NSF followed requirements embedded in federal law. Federal appropriations law requires NSF to notify the House and Senate Appropriations Committees at least 30 days in advance of any planned decommissioning of agency-owned facilities or assets valued at more than $2.5 million. The House letter said no such notification had been transmitted.
Merkley said he learned of the dismantling through news reports. “It was like the alarm bells just went off,” he said. “None of us knew about this. and there didn’t appear to have been any consultation or any scientific commission or stakeholders that were leading to this.” Merkley said his office is still confirming whether formal notification was given. but he added that if there was no notification. “this would appear to be illegal.”.
Merkley and Murkowski plan to file legislation Monday that would prohibit NSF from spending federal funds to decommission instruments until a thorough review has been completed.
The lawmakers also argued the cuts are arriving at a particularly dangerous moment for forecasting and preparedness. In their letter. the senators cited the approaching El Niño—a periodic Pacific warming that disrupts weather patterns and supercharges marine heat waves—as evidence the dismantling is ill timed. They warned: “The loss of this deep-water observation system would threaten our ability to prepare for and monitor future El Niño events. ” adding that coastal communities. fishermen and emergency responders would be left without crucial information.
The House letter made the case in sharper terms about what is being lost and what is being replaced. It said: “Instead of paying for the valuable insights that can be gleaned from the 10-years-and-counting continuous monitoring. taxpayers are now paying for research vessels to span the ocean dredging up hundreds of pieces of instrumentation. This is pathetic.” It also argued: “In a time of strained resources. the NSF is wasting time and money to destroy its own scientific infrastructure.”.
The ocean observatory cuts are being framed by lawmakers as part of a broader retreat from environmental and climate-related science under President Donald Trump’s Republican administration. The letters point to efforts they say include scaling back research programs. reducing staffing at agencies including the National Oceanic and Atmospheric Administration and the Environmental Protection Agency. and easing emissions regulations.
As crews prepare to pull the first buoy off Oregon on Tuesday. Congress is insisting the agency pause long enough to answer the questions lawmakers say were never addressed. The core dispute is not only about sensors and budgets. It is about whether a monitoring network built with public money can be stripped away while Congress says it was not told. not consulted. and not given the review it says the science—and public safety—requires.
NSF Ocean Observatories Initiative Ocean sensors El Niño ocean monitoring Congress Appropriations notification Jeff Merkley Lisa Murkowski Zoe Lofgren Jared Huffman