If you are looking for commentary on federal court rules, you can search the Federal Rules Decisions (FRD) database on Westlaw. FRD contains documents interpreting the federal rules, documents reflecting changes and amendments to the federal rules and articles about the federal rules.

To retrieve only articles use the FRD Articles database (FRD-ART). To search a specific topic, use the title field (ti) with your search term, i.e. ti(class-action). There are also databases to retrieve only cases (FRD-CS) and to retrieve only rules (FRD-RULES). Coverage begins with 1938.