“CFR” means Code of Federal Regulations. Regulations, not law. For law, you need to look at United States Code (USC).
When researching the law, it is important to remember the four main types of law: constitutional, statutory, administrative and case (common) law.
Statutory Law [USC+]
Both state and federal statutes are available in print and online from Andersen Library. The federal statutes can be found in the Statutes at Large (in chronological order of the date of passage) or in the United States Code (codified by subject matter). The latest edition of United States Code (2006) is available in the Government Reference Collection. As for Wisconsin, you can find the latest edition of the Wisconsin Statutes both online from the Wisconsin State Legislature or via Westlaw.
Administrative Law [CFR+]
The regulations passed by both the federal and state agencies can be found in publications online and in print at the library. For the federal agencies, check the Code of Federal Regulations, updated yearly. If you’re looking for proposals from federal agencies, you’ll find them in the Federal Register, published daily. Wisconsin has similar publications, the Wisconsin Administrative Code and the Administrative Register.
https://libguides.uww.edu/c.php?g=548410&p=3762360