USDS certainly does not. The guiding principle at the time from what I remembered is to try to set "some standard" for all federal government websites to strive to because there were none.

We also helped with design and infrastructure support for ssa.gov (launched earlier this year) with a contractor team to try to boil down 60,000 pages to ~30 pages that people tend to use.

// opinions of a former USDS, no longer with the team