Statements on Introduced Bills and Joint Resolutions

Floor Speech

S. 2044. A bill to require the Under Secretary for Science and Technology in the Department of Homeland Security to contract with an independent laboratory to study the health effects of backscatter x-ray machines used at airline checkpoints operated by the Transportation Security Administration and provide improved notice to airline passengers; to the Committee on Commerce, Science, and Transportation.

Ms. COLLINS. Mr. President, I rise today to introduce legislation aimed at ensuring that the health of American travelers is not placed at possible risk as our airport security technology evolves. I am very pleased to be joined by Senators Akaka, Coburn, Scott Brown, and Levin, who are cosponsoring this bill.

Our bill has two major components. First, it would require the Department of Homeland Security's Science and Technology Directorate, in consultation with the National Science Foundation, to commission an independent study on the possible health effects of the x-ray radiation emitted by some of the scanning machines we see and pass through in our airports. Second, it would give airline passengers, especially those passengers in sensitive groups such as pregnant women, clear notice of their ability to choose another screening option in lieu of exposure to ionizing radiation.

Some advanced-imaging technology--or AIT--machines rely on x-ray backscatter technology. Time and time again, I have expressed my concern over their use, particularly since there is an alternative screening technology available. While the TSA has repeatedly told the public that the amount of radiation emitted from these machines is extremely small, passengers and some scientific experts have raised legitimate questions about the impact of repeated exposure to this radiation.

Last November, during a hearing on aviation security before our Homeland Security Committee, the TSA Administrator, John Pistole, agreed to my call for an independent study to address the lingering health concerns and questions about this additional and repeated exposure to radiation. Shortly thereafter, however, he appeared to back away from this commitment, suggesting that a forthcoming report by the Department of Homeland Security's inspector general might be a sufficient substitute for a new, completely independent, thorough study.
Chairman Joe Lieberman and I wrote to the Administrator to press for more details about TSA's plans for an independent study. Two weeks later, having received no reply, I sent another letter to Administrator Pistole asking why he believed the IG report on TSA's use of backscatter machines was a sufficient substitute for an independent study of the health impacts. TSA's response lacked any detail as to why the agency no longer believes an independent study on the health effects of x-ray backscatter machines is warranted, nor did it explain how the IG's review would be a sufficient substitute for an independent study. That is why I have introduced this bill today.

Late last year, the European Commission announced that ``in order not to risk jeopardizing citizens' health and safety,'' it would only authorize the use of passenger scanners in the European Union that do not use x-ray technology. This prohibition gives even more need and justification for an independent study of the safety of the AIT machines.

Some respected experts have warned Congress and the administration of the potential negative public health risks posed by the x-ray backscatter machines. They note that while the risk that someone might develop cancer because of his or her exposure to radiation during one screening by such an AIT machine is very small, we simply do not truly know the risk of this radiation exposure over multiple screenings for frequent flyers, those in vulnerable groups, or TSA employees themselves who are operating these machines.

When a person is scanned by these machines, they receive a dose of radiation--what experts in the field call a direct dose. During the scan, some of the radiation is not absorbed but is scattered in random directions from the person being scanned. Experts call this the scatter dose. Some experts point to anomalies between the scatter dose reportedly associated with these scanners and the scatter dose associated with comparable medical technology. Specifically, the scatter doses for these AIT machines are higher in relative terms than scatter doses for comparable medical devices. What is troubling is that the experts are not sure why the AIT scatter doses are higher. They point to possible deficiencies with the testing equipment or the poor placement of the testing equipment as possible explanations. Overall, they say this anomaly could point to higher direct dose rates and should be yet another impetus for an independent study.

Additionally, some experts note that the safety mechanisms in these machines that would prevent them from malfunctioning have never been independently tested. This means that if a machine malfunctions and the safety features designed to shut the machine down in such an instance do not work, a traveler could receive a higher dose of radiation. Pregnant women, children, the elderly, and as much as 5 percent of the adult population are more sensitive to radiation exposure. At a minimum, this suggests the need for further independent study.

Mr. President, I wish to share with my colleagues a tragic episode involving the daughter of two of my constituents. She underwent screening at the airport with a backscatter x-ray AIT. She was pregnant and directed by TSA to a line for a backscatter x-ray AIT machine. She was completely unaware that she was entering into an x-ray emitting machine before she stepped into it. She thought it was the more traditional magnetometer. Afterward, she was distressed to know she had exposed her unborn child to x-ray radiation. Had she realized ahead of time, she clearly would have opted for the alternative screening methods. Only 2 weeks later, she suffered a miscarriage which she attributes to the radiation she received from this scan. We will never know for certain the cause of this family's loss, but they believe in their hearts that the backscatter radiation is to blame.

Clearly, at a minimum, this young woman should have been informed by a prominent sign that an alternative means of screening was available. That is why my bill also requires TSA to have larger, understandable signs at the beginning of the screening process, not later when it is only noticed, if at all, after a lengthy wait in line. Signs should alert passengers that pregnant women, children, and the elderly can be more sensitive to radiation exposure. These signs should also make clear that passengers can opt out of this type of scanning.

I have urged TSA to move forward using only radiation screening technology, but in the meantime, an independent study is needed to protect the public and to determine which technology is worthy of taxpayer dollars. Surely passengers should be well informed of their screening options.

We Americans have demonstrated our willingness to endure enhanced security measures at our airports if those measures appear to be reasonable and related to real risks. But travelers become frustrated when security measures inconvenience them without cause, cause privacy or health concerns, or when they appear to be focused on those who pose little or no threat.

On this particular issue, Senators Akaka, Coburn, Scott Brown, Levin, and I agree that we are past the time when an independent review of the scanning technology that emits radiation must be undertaken. I urge my colleagues to join us in quickly passing this legislation.

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