The United States proudly celebrates itself as a nation of immigrants, founded not on blood or ancestry but on the ideals of liberty, constitutional government, and equal citizenship. Yet throughout much of its history, a competing vision has existed alongside that ideal: the belief that “real Americans” are defined not merely by civic allegiance but by race. For generations, this contradiction has left many non-white Americans trapped in the role of the perpetual foreigner—citizens whose loyalty, identity, and belonging remain subject to question regardless of how many generations their families have lived in America.
This phenomenon is often dismissed as simple prejudice. In reality, it was reinforced by law. During the late nineteenth and early twentieth centuries, federal and state governments deliberately used legal definitions of race to determine who could become an American citizen, own property, and fully participate in the nation’s economic life. The “perpetual foreigner” stereotype was not merely a cultural accident; it was institutionalized by the American legal system.
At the heart of this history lies the unresolved tension between civic nationalism and ethno-nationalism. Civic nationalism holds that anyone who embraces the Constitution and democratic values can become American. Ethno-nationalism assumes that true American identity is rooted in a white, European heritage. While successive generations of European immigrants gradually blended into an expanding definition of “whiteness,” non-white Americans could not. Their physical appearance became a permanent marker of foreignness, regardless of language, citizenship, military service, or cultural assimilation.
This distinction was reinforced by the U.S. Supreme Court.
Under federal naturalization laws, citizenship was limited to “free white persons” and later to persons of African descent, yet Congress never defined what “white” meant. That ambiguity forced Asian immigrants to seek answers from the courts, producing two of the most revealing decisions in American legal history.
In Ozawa v. United States (1922), Takao Ozawa argued that after more than twenty years in America, speaking English, adopting American customs, and possessing skin lighter than many Europeans, he should be considered white. The Supreme Court unanimously rejected his claim, ruling that “white” meant belonging to the Caucasian race as understood by contemporary anthropology. Because Ozawa was ethnically Japanese, he was declared legally ineligible for citizenship.
Only three months later, the Court confronted the contradiction it had created.
In United States v. Bhagat Singh Thind (1923), Bhagat Singh Thind, a Sikh immigrant and U.S. Army veteran, demonstrated that anthropologists classified high-caste Indians as Caucasian. Under the Court’s own reasoning in Ozawa, he should have qualified as white.
Instead, the Court abandoned science altogether.
Justice George Sutherland ruled that “white” should not be defined by anthropology but by the “common understanding” of ordinary Americans. Scientific evidence no longer mattered. What mattered was whether society perceived someone as white. In the span of ninety days, the Court shifted from scientific classification to popular prejudice, revealing that the legal definition of whiteness existed not to describe race objectively but to preserve an existing racial hierarchy.
The consequences extended far beyond citizenship.
The Court’s decisions created the legal category of “aliens ineligible for citizenship,” which western states quickly transformed into powerful tools of economic exclusion. Through Alien Land Laws, states prohibited these individuals from purchasing or leasing agricultural land. When Asian immigrants attempted to place property in the names of their American-born children—citizens under the Fourteenth Amendment—states amended their laws to prevent non-citizen parents from acting as guardians. Governments then forced the sale of farms and confiscated land, systematically destroying wealth that families had spent decades building.
These legal precedents reached their most devastating expression during World War II. While Japanese Americans were incarcerated in internment camps, many families lost farms, businesses, and property that had already been made legally vulnerable through decades of discriminatory legislation. Although later decisions such as Oyama v. California (1948) weakened Alien Land Laws, and the McCarran-Walter Act of 1952 finally removed racial restrictions from naturalization, the cultural assumptions embedded by these laws proved far more enduring than the statutes themselves.
Law does more than regulate behavior; it teaches society who belongs. For decades, the American legal system declared that no amount of assimilation, education, military service, or loyalty could overcome racial ancestry. By changing the definition of “white” whenever necessary to exclude Asians, the Supreme Court transformed racial exclusion into constitutional doctrine and gave legal legitimacy to the idea that some Americans could never fully become American.
Although today’s United States is vastly different from the America of Ozawa and Thind, echoes of that legal history remain. Asian Americans, Latino Americans, Muslim Americans, and other minority groups are still routinely asked, “Where are you really from?”—a question seldom posed to white Americans. Such moments are more than casual curiosity; they reflect a historical assumption that visible difference implies foreign origin.
The stereotype of the perpetual foreigner did not emerge spontaneously. It was nurtured by generations of laws that defined citizenship, property rights, and national identity through race. Understanding that history reminds us that belonging is not determined by appearance or ancestry, but by the constitutional principles America has long claimed to represent—and continues to strive toward fulfilling.