On October 16, 2026, a Seattle federal judge dismissed a class‑action lawsuit that challenged the labeling of Costco Wholesale Corp.'s Kirkland Signature tequila.
The judge ruled that the definition and labeling of tequila are governed by Mexican regulations rather than U.S. law.
The case had alleged the tequila was mislabeled, but the court held that Mexican standards determine what may be called tequila.