The "TSA breast milk controversy" refers to a long-standing pattern of travelers being harassed or forced to dump breast milk at airport security checkpoints, despite TSA's own policies. Although breast milk and formula have long been classified as "medically necessary liquids" (exempt from the 3.4oz rule), many parents reported that individual officers were poorly trained, often demanding that milk be "tested" in unhygienic ways or insisting that it couldn't be carried if the baby wasn't present. The controversy peaked in the 2020s after high-profile incidents involving celebrities and advocates like Emily Calandrelli. In response, a major bipartisan measure called the BABES Enhancement Act was signed into law in late 2025. This law mandates that the TSA streamline its standards, provide better officer training, and maintain strict hygiene protocols when handling infant nutrition. As of 2026, the TSA is now legally required to update its guidance every five years and is subject to independent audits to ensure parents aren't being mistreated. This has significantly reduced "gate-side" conflicts, though travelers are still advised to declare their milk to officers immediately upon reaching the bin area.