The TSA has strict guidelines on the quantity allowed rather than the type of liquid you can carry on a plane. It seems like the nature of the liquid isn't the issue; it's just the volume. In this case, you're more than welcome to bring soup with you, but like shampoo, soda, or honey, you can only bring 3.4 ounces of it. That works out to slightly under half a cup.
"We will never compromise on safety. When staffing constraints arise, the FAA will slow down air traffic at impacted airports to ensure operations remain safe," FAA spokesperson Hannah Walden tells WIRED, adding that Transportation secretary Sean Duffy " said that air traffic controllers who report to work will be paid. Regarding reductions in force (RIFs), DOT has been clear for months: safety critical positions-including air traffic controllers-have and will continue to be exempt from any RIFs."
Most travelers know about liquid restrictions at TSA, but there are some exceptions that allow you to bring certain things in larger quantities. Prescription medications, baby formula, and other medical liquids are allowed in containers greater than 3.4 ounces, but they're still among the most common reasons bags get pulled aside. "Even though they are permitted, officers may need to screen medically necessary liquids if the quantity is greater than 3.4 ounces," a TSA spokesperson says.
That quick check wasn't random. In response to safety concerns surrounding lithium-ion batteries, the TSA has stepped up enforcement and is paying closer attention to power banks during security screenings. "TSA has not 'banned' power banks. However, they are only allowed in carry-on bags," a spokesperson told Travel + Leisure. Most standard power banks fall under the FAA's 100Wh (or 27,000mAh) limit, but higher-capacity models are increasingly common, especially among travelers looking to charge laptops or multiple devices.