Citizens adjust their perceptions of military expenditure based largely on their worldview, as defined by their race, ethnicity, ideology, gender, socioeconomic status (SES), and education. Worldview might also reasonably be impacted by nativity. We explore the relationship between nativity and public opinion about military expenditure. Native-born survey respondents are less likely to believe that military expenditures are excessive than those born abroad. Race, ethnicity, ideology, nativity, and confidence in the military are the most significant variables used in explaining attitudes about military expenditure. Interaction analysis carried out for this article and reported here demonstrates that Hispanic and Asian ethnicity impacts on public perception of military expenditure are significantly greater when factoring in the nativity of survey respondents. With a growing portion of non-native-born citizens joining the electorate, public opinion analyses regarding military expenditure should take into account nativity as well as SES, gender, race, ideology, education, and ethnicity when seeking to explain public opinion dynamics.