How can one find cases that have interpreted a federal regulation?

The most reliable approach to find cases that have interpreted a federal regulation is by reviewing the case annotations in the Code of Federal Regulations (CFR) on Westlaw or Lexis. These legal research platforms provide comprehensive annotations that link relevant cases to specific regulations, allowing for efficient navigation of legal precedents and interpretations. By consulting these annotations, a researcher can quickly identify significant case law that discusses or applies the regulation in question, providing a robust understanding of how the regulation has been interpreted in various judicial contexts.

The other methods would not yield the same level of accuracy or comprehensiveness. For instance, state-only case law databases focus on state regulations and cases, not federal ones, making them unsuitable for this inquiry. A general internet search may yield some relevant information but lacks the specificity and authority of legal databases, often leading to unreliable sources. Lastly, while newspapers may report on regulatory changes or cases, they usually do not provide in-depth legal analysis or direct citations of case law, thus lacking the rigor needed for thorough legal research.