"In addition, a new disease registry is being launched to track Americans with autism"
The Aktion T4 program was rolled out as a data gathering excercise, the poision seeds lying in the questions about "capacity to work" and Ethnicity.
https://www.cbsnews.com/news/rfk-jr-autism-study-medical-records/

RFK Jr.'s autism study to amass medical records of many Americans
The autism study is planning to link confidential data "with broad coverage in the U.S. population" in one place for the first time.