The agency promulgates rules under a number of statutes, most of which are codified in Title 21 of the U.S. Code. If you're curious about the daily work of the FDA, you have a couple of options. You can search the Federal Register either in print (microform in some cases), or on HeinOnline, FDSys, ProQuest Congressional, Westlaw, or Lexis. A quicker way, however, might be to check out the agency's website where they link you directly to relevant notices in the Federal Register.
For more on the FDA and administrative law generally, check out the following resources:
- Administrative Law
- A Guide to Resources on the History of the Food and Drug Administration
- U.S. Administrative Law Research: Agency Decisions
- Administrative Law Research Guide
- Food, Drug, and Cosmetic Law Research Guide