Professor Moore was the only Democratic witness and the only law professor before Congress. She testified on issues related to constituents seeking to place even more restrictions on class actions than have already occurred both legislatively and by the Supreme Court over the last decade or so.
Professor Moore was selected based on her expertise in civil procedure and empirical research, specifically her scholarship on the analysis of class action lawsuits.
See her published work on this topic here. CONFRONTING THE MYTH OF “STATE COURT CLASS ACTION ABUSES” THROUGH AN UNDERSTANDING OF HEURISTICS AND A PLEA FOR MORE STATISTICS.