The scales of struggle over migrant control and mobility have become increasingly condensed at city-regional levels. Interrogating the socio-spatial relations between urbanization and migration in Los Angeles, this dissertation elaborates a conception of the management of urban migration as a product of historical struggles interpreted/codified within the design and development of regionally specific migration regimes. Differentially subordinating and incorporating precarious migrant labor power through a racialized process of irregularization, metropolitan migration regimes are spatialized apparatuses of command that target, contain, and control the initially valorized practices of laboring migrant populations within the distinct political economic conjunctures of city-regions. Functioning as tactical enclosures of migrant activity, these assemblages of regulation and restriction constitute a decisive coupling of technical management and racial exclusion, ultimately instantiating "borderzones," which reproduce the precarity and vulnerability of migrant labor within the neoliberal city. Examining the struggles over leaf blower use in Los Angeles as a case study in the contestation of metropolitan migration regimes, this dissertation interrogates the political mobilization of white affluent homeowners and Latino immigrant gardeners as struggles over neoliberal urban governance.