The American Judicature Society, a powerful advocate for judicial reform, ethics and research, is shutting its doors after 101 years in existence.

In a statement emailed to journalists Tuesday night, the society’s president, Tom Leighton, said the group’s membership model had become “more challenging” in recent years “as new nonprofit entities with organizational and financial structures more suited to the times have joined AJS in the fight” for a fair and impartial judiciary.