Why Demographic Nationalism in the Southwest Will Demand Reunion With Mexico

{snip}

American Community Survey and Migration Policy Institute data document this modern demographic shift, estimating that approximately 40 million people of Mexican origin live within U.S. sovereignty today. California and Texas alone hold the large majority of both Mexican immigrants and their U.S.-born descendants. This concentration has sustained deep cultural ties; Pew Research Center surveys have recorded that 52% of Mexican-origin adults identified first as “Mexican” or “Mexicano,” while 32% of even third-generation respondents retained that primary self-description. Capitalizing on this permanent base, Mexico’s government has rapidly accelerated dual-nationality registrations. U.S. consulates processed 126,060 cases in 2025 alone — a staggering 153% jump from the previous year. By formalizing these ties, Mexico successfully retains the institutional allegiance of millions living within American borders — effectively leveraging historical and geographical proximity to project its own sovereign influence deep into the U.S. electorate.

The volatile reality of this friction surfaced vividly in June 2025, when protesters in Los Angeles waved Mexican flags while setting Waymo vehicles ablaze, hurling rocks at California Highway Patrol officers, and clashing outside federal detention facilities during ICE operations. Federal prosecutors later charged multiple individuals with violence against officers and property, but the perpetrators had already sent the underlying cultural message. These open displays of pro-Mexican and anti-enforcement sentiment confirm patterns of incomplete loyalty that earlier European immigrant cohorts largely abandoned within one or two generations. Because of this shifting landscape, both major political parties now face clear electoral incentives to treat the southwest as a distinct demographic bloc whose preferences can decide national outcomes. This political pandering raises the distinct probability that organized demands for autonomy, or even formal reunion with Mexico, will emerge within a generation.

{snip}