It’s true, as per @briankrebs. In December the US proposed a significant tightening of its ESTA screening for incoming travellers (Australians, that’s us, we use the ESTA system) to include years of email addresses used by you or your family, as well as other “high value data” *including your DNA*. Read it here.
https://www.govinfo.gov/content/pkg/FR-2025-12-10/pdf/2025-22461.pdf