Authority of the Secretary to prescribe regulations
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
The general authority of the Secretary to prescribe regulations governing the work of the Department is based on 5 U.S.C. 301 which provides that the head of an Executive department may prescribe regulations for the government of his department, the conduct of its employees, the distribution and performance of its business, and the custody, use and preservation of its records, papers, and property.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.