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Trump Administration Rolls Back Safeguards Limiting Release of Cancer-Causing Air Pollutant Ethylene Oxide
Earlier today, the Trump administration rolled back a 2024 EPA rule limiting commercial sterilization facilities from releasing ethylene oxide, a potent cancer-causing air pollutant.
Ethylene oxide has long been known to cause a range of acute and chronic health problems. The 2024 rule, which came eight years after the U.S. Environmental Protection Agency (EPA) determined that ethylene oxide is 60 times more toxic than previously realized, required commercial sterilization facilities to significantly reduce their emissions of ethylene oxide, install additional control equipment and improve monitoring. These facilities use ethylene oxide to sterilize medical equipment, as well as some dried food products and spices. Prior to this rollback, EPA had granted legally dubious compliance exemptions to 39 sterilization facilities covered by this rule.
Below is a statement from Darya Minovi, a senior analyst for the Center for Science and Democracy at the Union of Concerned Scientists:
Communications Officer Center for Science & Democracy, Clean Transportation, Western States lcohen@ucs.org 617-334-7343“This dangerous decision puts people across the United States and in Puerto Rico at a higher risk of breathing dangerous fumes known to cause respiratory irritation, nausea, blurred vision, headaches and various cancers. Children are especially vulnerable to the cancer-causing harms of ethylene oxide exposure.
“According to UCS analysis, nearly 14 million people in the United States live within five miles of at least one commercial sterilization facility and more than 10,000 schools and childcare facilities fall within those areas. These communities are disproportionately made up of people of color or those who do not speak English as a first language.
“The science is clear about the risks posed by ethylene oxide. The 2024 rule was long overdue, requiring sterilization facilities to use proven pollution-control technologies to protect workers and fenceline communities from unnecessary cancer risk. And since ethylene oxide is a colorless and nearly odorless gas, many people had no idea they were being exposed. The rule was expected to cut ethylene oxide emissions from commercial sterilizers by up to 90% and substantially reduce cancer risks for nearby communities.
“This decision is a reckless and self-serving handout to big industry, which asked for this rule to be rolled back. This process sidestepped community input from the start and is an affront to communities that have unknowingly lived with ethylene oxide exposure for decades. These actions show, yet again, that this administration has little to no regard for the health and welfare of working people or any interest in protecting children from exposure to toxic chemicals.
“Ethylene oxide emissions controls need to be strengthened – not dismantled. Communities living near these facilities deserve clean air and policies grounded in science, not decisions that allow dangerous emissions to continue unchecked."
More than 14 million people in the US live near sterilizer facilities that emit one of the most toxic air pollutants regulated by the agency
Today, the Trump Environmental Protection Agency (EPA) announced a proposed rule to roll back public health regulations adopted in 2024 for commercial sterilizer facilities that use ethylene oxide to sterilize medical equipment and spices. Ethylene oxide, one of the most toxic air pollutants EPA regulates, is a highly carcinogenic flammable gas capable of damaging DNA even in small doses.
The 2024 regulations require most sterilizer facilities to reduce emissions and have continuous emissions monitoring systems by April 6, 2026. According to the EPA, the 2024 safeguards when fully implemented would eliminate over 90% of ethylene oxide emissions from commercial sterilizer facilities and reduce the number of people exposed to unacceptable cancer risks from ethylene oxide by 92%.
“The 2024 standards would have delivered enormous public health benefits. EPA knows that ethylene oxide is carcinogenic and determined that sterilizers can install effective and affordable pollution controls,” said Earthjustice senior attorney Deena Tumeh. “EPA has no basis to repeal this well-supported rule. By rolling back the rule, the Trump EPA is bending the knee to the sterilizer industry at the expense of millions of people’s health.”
If finalized, Trump EPA’s proposal will allow sterilizer facilities to emit more ethylene oxide. Based on EPA’s own data, this proposal would subject at least 85,000 more people to unacceptable cancer risks compared to the 2024 rule. Many facilities are already in compliance with one or more of the emission limitations in the 2024 rule, but Trump EPA’s proposal would allow these facilities to reduce or eliminate their emission controls and monitoring equipment.
Nearly 14 million people in the United States and Puerto Rico live within five miles of a commercial sterilizer, according to a 2023 report from the Union of Concerned Scientists. Inhaling ethylene oxide can increase the risk of cancer, including breast cancer and cancer of white blood cells.
Children are particularly vulnerable to ethylene oxide harm because the chemical remains in their bodies longer than it does in adults. Many commercial sterilizer facilities are in low-income neighborhoods and communities of color, and compound existing health risks from other local sources of pollution. In 2018, the first Trump EPA determined that ethylene oxide was a major driver of elevated cancer risks that the Agency is now ignoring.
In June 2025, the Trump administration exempted more than 40 percent of sterilizers in the United States from complying with the 2024 rule for two years. These exemptions came after EPA Administrator Lee Zeldin invited corporations to email the agency to request exemptions from clean air standards.
The 2024 sterilizer protections were the result of a successful 2022 lawsuit brought by California Communities Against Toxics, Clean Power Lake County, Rio Grande International Study Center, Sierra Club, and the Union of Concerned Scientists, represented by Earthjustice.
Quotes from our clients and partners:
“I remember the EPA informing us that Steri-Tech’s ethylene oxide emissions in my hometown of Salinas, Puerto Rico, were so high that we had one of the highest rates of toxic air cancer risk in the United States” said Victor Alvarado, founder and coordinator for Comité Diálogo Ambiental. “Eliminating the new protections against ethylene oxide emissions is unjust.”
“We understand that industry applied heavy pressure to weaken the previously finalized rule. We also understand that industry remains more concerned with their profits than the lives of those who live near sterilizer facilities, like my community in Laredo,” said Tricia Cortez, executive director of Rio Grande International Study Center. “Sterilizer facilities, like Midwest must be held accountable for their dangerous, cancer-causing emissions. We need an EPA that works to protect us, the people, not financial interests and corporations that continue to cause so much harm to so many.”
“EPA’s decision to roll back commercial sterilizer safeguards is an affront to countless families and workers who were unknowingly exposed to ethylene oxide—a cancer-causing gas—for years, even decades,” said Darya Minovi, senior analyst at the Union of Concerned Scientists. “The rule was based on a growing and robust body of evidence showing the toxicity of long-term exposure to ethylene oxide, which EPA, international institutions, and the National Academies have affirmed. Rolling back these protections will undoubtedly harm people’s health, especially children’s.”
“Walking back key regulations for ethylene oxide sterilizer facilities is essentially giving a highly polluting industry a get-out-of-jail-free card. Sterilizers are some of the largest, most toxic chemical manufacturing facilities in the country,” said Jane Williams, executive director of California Communities Against Toxics and chair of the Sierra Club National Clean Air Team. “Rather than regressing on key protections, these facilities need even more controls in place to ensure the safety of workers and nearby communities.”
"Bringing this war to an end," said one former US intelligence analyst, "requires recognizing it can still get much, much worse."
In what has been described as a potential "major escalation" of the Trump administration's war with Iran, Defense Secretary Pete Hegseth has reportedly approved a request from US Central Command to move more warships and thousands of Marines to the Middle East following Iran's attacks on vessels in the Strait of Hormuz.
Citing three US officials, The Wall Street Journal reported on Friday that the US was sending "an element of an amphibious ready group and attached Marine expeditionary unit, typically consisting of several warships and 5,000 Marines and sailors."
According to the Journal, the Japan-based USS Tripoli and its attached Marines are already headed to the Middle East.
While the Journal did not explicitly report that the operation was tied to the volatile situation in the Strait of Hormuz, it noted that "the move comes as Iran’s attacks on the strait have paralyzed traffic through the strategic waterway, disrupting the global economy, driving up gas prices and posing a major military and political challenge for President [Donald] Trump."
In his first address on Thursday, delivered by a news anchor on Iranian state TV, the country's new supreme leader, Mojtaba Khamenei, said that “the lever of blocking the Strait of Hormuz must definitely be used" to heighten economic pressure on the US.
Iran's Islamic Revolutionary Guard Corps (IRGC) has declared that "not a liter of oil" shall pass through the strait, and vowed to attack any ship linked to the US and Israel that may attempt to make the journey.
Iran has reportedly attacked at least six commercial ships in the area since Wednesday, including one marked with a Thai flag that still has three crew members missing. US intelligence sources have also accused Iran of laying mines in the Strait, which Iran has neither confirmed nor denied.
The blockage of the strait, through which about one-fifth of global oil shipments pass each year, has sent the global market into chaos. Prices of Brent crude have surged from under $70 less than a month ago to more than $100 per barrel on the global market, and US gas prices have leaped to $3.63 per gallon on average, up from $2.94 a month ago.
Prices have continued to climb even after the International Energy Agency (IEA) announced its largest-ever coordinated release of oil from nations' strategic reserves on Wednesday to combat what it called "the largest supply disruption in the history of the global oil market."
Shashank Joshi, the defense editor at The Economist and a visiting fellow at the Department of War Studies at King's College London, said that a deployment of such a large Marine force seems to be "a key indicator of a potential ground operation" in Iran.
Trump said earlier this week that he was "nowhere near" sending troops into Iran even as it ramped up threats to block the strait. But privately, he has reportedly been mulling plans to put "boots on the ground" within Iranian territory to accomplish a number of objectives, though officials have characterized them as limited special-operations missions.
Administration officials have reportedly suggested a commando raid on Iran's nuclear sites to confiscate or sabotage its supply of uranium, according to Axios. They've also considered a plan to occupy Kharg Island, which sits 15 miles off Iran's coast and handles about 90% of its oil exports, serving as an economic "lifeline" for the battered nation.
But Trump has also said that if Iran blocks the strait, "the US Navy and its partners will escort tankers through the strait, if needed." Chairman of the Joint Chiefs, Gen. Dan Caine, has said the Pentagon is looking at "a range of options" to do this.
In an analysis published Tuesday by Zeteo, Harrison Mann, a former US Army major and executive officer of the Defense Intelligence Agency’s Middle East/Africa Regional Center, suggested that the US may pursue an ambitious plan to "clear Iran’s coastline around the strait" to get tankers moving again.
Mann, who worked under the Biden administration but resigned in protest of its support for the genocide in Gaza, said this plan would require "an indefinite occupation–otherwise missile trucks could just get in position after US forces leave." Doing this, he added, would require "a full-fledged invasion, possibly beyond even the 10,000 or so rapid-response forces at Trump’s disposal."
"All of these ground operations risk high casualties while failing to accomplish their missions," Mann said. "That’s a feature, not a bug. Even if one of these operations met its objectives, troops in peril behind enemy lines demand resupply, evacuation, and revenge, which puts more troops in peril behind enemy lines, and so on."
The movement of more troops comes as the US public expresses strong disapproval of Trump's war with Iran. In a Quinnipiac poll published this week, 53% of registered voters said they opposed US military action against Iran, while just 40% approved.
About 74% said they feared that the war would cause oil and gas prices to rise, and 71% feared that the war would last "months" or longer.
Trump's former chief strategist, Steve Bannon, who remains one of his top allies in media, said on his War Room podcast that deploying such a large military force "sends a signal to Iran, but it also sends a signal to the American people: This is a major escalation."
Mann said that putting troops on the ground in Iran will only "ensure that Trump can't back out easily, which is exactly what [Israeli Prime Minister Benjamin] Netanyahu, [US Sen.] Lindsey Graham (R-SC), and their ilk need to fracture Iran.
"Bringing this war to an end," Mann said, "requires recognizing it can still get much, much worse, refusing to fall for the promise of 'small special ops raids,' and calling these courses of action what they are: a prelude to forever war."
"If high costs weren’t already bad enough, Donald Trump’s unnecessary war in Iran has sent gas prices through the roof," said one House Democrat.
Data released Friday showed that US consumer sentiment hit a new low for 2026 and the American economy expanded by just 0.7% in the fourth quarter of last year, indicators that experts said are only going to get worse due to the cascading impacts of President Donald Trump's deadly, illegal, and expensive war on Iran.
“President Trump is flooring the gas pedal as he drives our economy over a cliff," Alex Jacquez, chief of policy and advocacy at the Groundwork Collaborative, said in response to the new data, some of which was collected before the US and Israel launched their assault on Iran, sparking a regional conflict, sending oil prices surging, and destabilizing the global economy.
"As bad as this week’s data is," Jacquez added, "it understates reality for exhausted consumers who have been hit with even more price hikes caused by the president’s intentional turmoil in the weeks since this data was collected. Instead of working to bring down ever-increasing prices at the pump, the grocery store, and the doctor’s office, the president is betraying working families as his illegal war with Iran stokes inflation."
Figures released Friday by the US Commerce Department's Bureau of Economic Analysis (BEA) showed that real gross domestic product increased at half the rate predicted by previous government estimates.
"Real GDP was revised down 0.7 percentage points from the advance estimate [of 1.4%], reflecting downward revisions to exports, consumer spending, government spending, and investment," the BEA said in a news release.
NBC News noted that "economists had expected the revision to go the other way—and show stronger growth."
The BEA also published data showing that the personal consumption expenditures price index, a key inflation reading, rose at an annualized rate of 2.8% in January.
“Families across the United States are struggling to make ends meet in Donald Trump’s economy," Rep. Brendan Boyle (D-Pa.), the top Democrat on the House Budget Committee, said in a statement. "If high costs weren’t already bad enough, Donald Trump’s unnecessary war in Iran has sent gas prices through the roof."
A Harris Poll opinion survey conducted for The Guardian and released Friday found that more than 70% of US voters believe Trump's tariff regime has driven up their costs.
"In the short run, the economic impact of a sustained loss of Gulf oil could be very ugly."
Consumer sentiment, meanwhile, continued its steady decline in March, falling about 2% compared to last month, according to the University of Michigan's Surveys of Consumers. Roughly half of the interviews conducted for the consumer sentiment report were completed before the US and Israel began attacking Iran on February 28.
Joanne Hsu, director of the Surveys of Consumers, noted that "interviews completed prior to the military action in Iran showed an improvement in sentiment from last month, but lower readings seen during the nine days thereafter completely erased those initial gains."
"Gasoline prices have exerted the most immediate impact felt by consumers, though the magnitude of passthrough to other prices remains highly uncertain," Hsu noted. "A broad swath of consumers across incomes, age, and political affiliation all reported declines in expectations for their personal finances, down 7.5% nationally."
"Interviews completed after February 28 exhibited higher inflation expectations than those completed before that date," Hsu added.
The first six days of Trump's war on Iran cost US taxpayers over $11 billion, and the price tag is set to rise exponentially as the administration deploys thousands of additional troops to the Middle East and continues aggressively bombing Iran, which has retaliated in part by closing the Strait of Hormuz—choking off the flow of oil through the critical trade route and sending prices surging.
The Trump administration has sought to downplay skyrocketing oil prices even as it takes emergency action in an attempt to bring them down. The International Energy Agency said Thursday that the US-Israeli assault on Iran sparked "the largest supply disruption in the history of the global oil market."
Economist Paul Krugman warned Friday that "oil prices could easily go much higher," noting, "The US and other major economies are a lot less oil-dependent than they were in the 1970s, and even at $100 a barrel oil prices are not high enough to provoke a major crisis."
"In the short run, the economic impact of a sustained loss of Gulf oil could be very ugly," Krugman wrote. "I’ve seen some alarmists warn that a long war in the Gulf could lead to oil at $150 a barrel. That looks low to me."