On the Basis of Sex is a biographical legal drama film directed by Mimi Leder. Armie Hammer plays the role of Martin Ginsburg, the husband of Supreme Court Justice Ruth Bader Ginsburg. The film tells the inspiring true story of Ruth Bader Ginsburg's early legal career and her fight for gender equality. Hammer's performance as Martin Ginsburg provides a supportive and loving portrayal of a husband who stands by his wife's side in her pursuit of justice.