This overview written by Kenneth M Kliebard, Michelle Park Chiu, J Warren Rissier, Jon R Roellke, Michael A Cumming, Heather Nelson, Megan A Suehiro, and Phillip J Wiese for Practical Law looks at trends and developments in class and collective actions in the United States. The authors note that after many years of growth in the use of the class action device in both federal and state courts, the US Congress and US Supreme Court have both acted to limit class actions.