Published Jul 17, 2025 " 6 minute read
Homeland Security Secretary Kristi Noem arrives for a news conference where she announced that most airline passengers will no longer have to remove their shoes at security checkpoints on Tuesday, July 8, 2025, at Reagan National Airport in Washington. Photo by Mark Schiefelbein /AP Photo NEW YORK When limits on liquids were introduced at TSA checkpoints across the country in 2006, bins overflowed with bottled water, toothpaste, shaving cream and so much more. Nearly two decades later, travelers are much more accustomed to the 3-1-13 regulations governing the size of the liquids theyre flying with, but scenes of passengers guzzling a beverage before putting their bags through the screening machines are still common.
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Thats why Homeland Security Secretary Kristi Noem sent ripples through the traveling public when she said earlier this week that changes might be afoot when it comes to the TSAs current liquid limits.
The liquids, Im questioning. So that may be the next big announcement, is what size your liquids need to be, Noem told a conference in Washington.
Will travelers be able to carry bigger bottles? Multiple 1-quart bags of liquids? Those details havent been rolled out. But coming on top of her announcement earlier this month that travelers could keep their shoes on at TSA checkpoints, it seems a much different security experience for American air travelers might be emerging.
9/11 and its aftermath changed much
Airline travel changed dramatically after the Sept. 11, 2001 attacks. Before that, airlines were responsible for security and would often contract it out to private firms, said Henry Harteveldt, an airline industry analyst with Atmosphere Research Group. Travelers often didnt need to show their ID at security checkpoints _ and people without boarding passes, such as family members or friends, could go to the gate in some locations.
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It was much more casual. And clearly it was ineffective, because 9/11 occurred, Hartevelt said.
Thats when the Department of Homeland Security and the Transportation Security Administration were born, with the mandate of preventing more terrorist attacks.
The liquid limits, however, didnt kick in until 2006, after authorities foiled a plot that used liquid explosives smuggled aboard carry-on luggage. The TSA then very briefly banned all liquids in carry-on luggage. That ban lasted about six weeks, but strained airlines baggage systems as more and more travelers turned to checked bags to pack toiletries.
At the time the 3.4-ounce limit was implemented, the FBI and other laboratories had found that tiny amounts of substances small enough to fit into a quart-size bag couldnt blow up an airliner.
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When the ban was eventually lifted in September 2006, consumers and businesses alike had to learn how to adapt to the 3-1-1 rule leading to more demand for smaller, travel size bottles of anything from shampoo to toothpaste, as well as clear, TSA approved toiletry bags that are still seen on store shelves today.
The rule was also adopted in many countries around the world starting later that year.
Keith Jeffries, a former TSA director at Los Angeles International Airport and now vice president of K2 Security Screening Group, says whatever comes next needs to be clear for passengers. And he knows whereof he speaks.
Jeffries was working for TSA in Albuquerque, New Mexico, when the liquids rules came down overnight. Signage had to be changed to let passengers know of the new regulations. Barrels overflowing with toothpaste, shaving cream and shampoo had to be emptied every half hour. Jeffries remembers seeing a pair of shoes sitting in one of the barrels.
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When he asked why, a TSA staffer said there was gel in the soles. I said, Please tell me I dont have a passenger back there walking in the sterile area barefoot. And he says, No, sir, they still have their socks on, he said. Thats how chaotic it was.
Its about more than convenience
Any move to simplify the screening process and cut down on the time it takes for passengers to navigate checkpoints would be a welcome change for everyone, Harteveldt says. Because it isnt just about convenience; those lines before the security checkpoints are the most at risk to a potential threat.
The fact that the TSA felt confident enough to change its shoe policy earlier this month may not save too much time from an individual travelers perspective, Harteveldt notes but marks a big step forward toward cutting down the average length of the security process when you think about the number of people going through U.S. airports each day. Relaxing current liquid restrictions could aid that effort.
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Still, questions remain. What we dont know is what the secretary is going to announce about liquids, Harteveldt said. Will they remove the liquid ban altogether and can we go back to bringing full-sized of toiletries and other items with us? Will they allow people to bring more than one bag of toiletries and liquids? And importantly, will they relax the limit on (the) quart-size bag itself?
Its also possible that the changes the TSA makes, whatever they are, only start at a handful of airports that have the technology to do so. Over the years, airports worldwide have adopted some aspects of security screenings faster or differently than others.
But travelers could be confused if theyre able to bring a full-size bottle of shampoo or lotion when flying out of one airport, for example, but not on their return trip home.
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The devil is going to be in the details, Harteveldt said. Thats why the rollout plan will be absolutely critical.
Harveldt says a more streamlined process could make travelers less stressed, but others including flight attendants and pilots who are in the skies more frequently may object and question whether airport security is being compromised. Still, Harveldt says he doesnt believe the TSA would make this change if the agency didnt feel it was authentically, truly safe.
What of expedited security lines?
If shoe regulations disappear and liquid restrictions are eased, the effects could ripple into the TSA PreCheck program, in which passengers submit information like their fingerprints and the agency prescreens them for any red flags. By giving the agency this information, the traveler then gets some benefits not available to other travelers a special line to go through and the ability to keep their computers in their bags and their shoes on, for example.
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But if those benefits become more widely available to all passengers, will fewer people sign up for PreCheck?
What is the impact on now both shoes and liquids going to have on TSA PreCheck enrollment? That is the million-dollar question, Jeffries said. And if I was still with TSA, I would be watching that closely over the next 12 to 18 months.
While the prospect of increasing the current liquid limit could be a welcome change for many U.S. travelers, some experts say that the tech isnt available in enough airports yet. Current X-ray machines used at most airports today have a difficult time distinguishing between different types of liquids, says Jeffrey Price, a professor of aviation at Metropolitan State University of Denver.
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Thats key, he explains, in determining whether something is harmless or potentially explosive.
While newer computed tomography scanners are better and have begun making their way to airports, Price said in commentary published last week that it could take another decade or more before the newer machines are deployed at all U.S. airports.
This is an issue that needs to be studied much more carefully than the policy to leave your shoes on, he said in an email Thursday.
Associated Press editor Elaine Kurtenbach in Bangkok contributed to this report.
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