This Article examines and evaluates the legal process method as a perspective from which to assess the law of federal courts. It then offers a modified approach to legal process that encompasses the full range of considerations that ought to inform modern judicial decision-making in this context. With that modified approach in mind, the article describes and critiques the Supreme Court’s statutory arising-under jurisprudence, both as originally developed and as currently practiced. The article shows that while the Court’s early “arising-under” jurisprudence was founded on durable principles and on the reasoned application of those principles, more recent decisions by the Court have strayed from that approach in service of a more mechanical ...