The 1972 Marine Mammal Protection Act (MMPA) helps govern human-environment interactions in the United States with public and agency processes. As a result, the 1972 MMPA has accumulated praise and critiques concerning its provisions and implementation. Previous research explored the impacts of the 1972 MMPA, but these publications do not provide a comprehensive assessment based on human-environment interactions and government structures in the Pacific Northwest to determine possible “best practices” for environmental law. The study observes the 1972 MMPA concerning its goals and cultural, environmental, and international implications to determine the 1972 MMPA’s effectiveness and opportunities for improvement in the National Oceanic and Atmospheric Administration’s “West Coast Region.” Through this research, I analyzed literary information and interviews with people from the National Oceanic and Atmospheric Administration, non-governmental organizations, and Indigenous communities to gather a holistic review of the 1972 MMPA as well as reveal pathways for enhancing environmental law in the United States. Available scholarly and media-based literature surrounding the 1972 MMPA suggest accomplishments encompassing the increased abundance of marine species over time, while mitigations for secondary impacts may be lacking. To appropriately address current concerns and perspectives of the 1972 MMPA, the United States public, agencies, and government bodies may collaborate to refine marine mammal securities. Revised implementation of the 1972 MMPA could inform future environmental policies and actions in the United States. Incorporating suggestions and relevant modifications in the 1972 MMPA may provide further effective partnerships in the “West Coast Region” with diverse stakeholder representations and marine conservation between governments and collectives. Consequently, the 1972 MMPA can serve as a case study for current and future environmental law in the United States and the international community.