This paper identifies the importance of transboundary groundwater between Mexico and the United States in relation to legal gaps in its regulation across different scales of management, use, and extraction, and the significance of water scarcity in the construction of hegemonic discourse on national security within the neoliberal context of the North American Free Trade Agreement (NAFTA). The article highlights the invisibility of transboundary groundwater in the context of NAFTA and the challenges it poses for equitable and peaceful access and use. It also discusses the legal and political implications of water scarcity, the role of national sovereignty, and the need for a stronger legal framework to ensure fair management of transboundary groundwater. The paper emphasizes the need for a more integrated approach to water management that considers the complex interactions between legal, political, and environmental factors. It also highlights the importance of international cooperation and the role of institutions in promoting sustainable water management. The study concludes that the legal and political frameworks governing transboundary groundwater need to be strengthened to ensure equitable and sustainable management of this critical resource.This paper identifies the importance of transboundary groundwater between Mexico and the United States in relation to legal gaps in its regulation across different scales of management, use, and extraction, and the significance of water scarcity in the construction of hegemonic discourse on national security within the neoliberal context of the North American Free Trade Agreement (NAFTA). The article highlights the invisibility of transboundary groundwater in the context of NAFTA and the challenges it poses for equitable and peaceful access and use. It also discusses the legal and political implications of water scarcity, the role of national sovereignty, and the need for a stronger legal framework to ensure fair management of transboundary groundwater. The paper emphasizes the need for a more integrated approach to water management that considers the complex interactions between legal, political, and environmental factors. It also highlights the importance of international cooperation and the role of institutions in promoting sustainable water management. The study concludes that the legal and political frameworks governing transboundary groundwater need to be strengthened to ensure equitable and sustainable management of this critical resource.