Furthermore, this role is heightened because the European Union is composed of very different nations with disparate legal systems. Kenney found that ECJ clerks provide legal and linguistic expertise (all opinions are issued in French), ease the workload of their members, participate in oral and written interactions between chambers, and provide continuity as members rapidly change. While Kenney concludes that they have more power than their counterparts on the U.S. Supreme Court, ECJ clerks act as agents for their principals—judges—and are not the puppeteers that critics claim.