Preemption is one of the most important legal doctrines for today’s progressives to understand because of its power to constrain progressive policymaking and social movement lawyering at the state and local level. By examining the detailed history of a decades-long campaign by the labor and environmental movements to improve working conditions in an industry at the heart of the global supply chain, Scott L. Cummings’s Blue and Green: The Drive for Justice at America’s Port (2018) provides a case study about the doctrine and impacts of preemption. The study also inspires lawyers and activists alike to reexamine core questions of factual relevance, representation and voice, and precedent.

中文翻译：

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抢占时代的进步法、激进主义和律师

优先权是当今进步人士理解的最重要的法律原则之一，因为它具有限制州和地方一级的进步政策制定和社会运动律师的权力。通过研究劳工和环境运动为改善全球供应链核心行业的工作条件而开展的长达数十年的运动的详细历史，Scott L. Cummings 的 Blue and Green: The Drive for Justice at America's Port (2018 ) 提供了一个关于抢占原则和影响的案例研究。该研究还启发律师和活动家重新审视事实相关性、代表性和声音以及先例等核心问题。