In my forthcoming article in Demography, on which I am first author with a junior graduate student, I investigate how legal barriers to citizenship help explain racial gaps in college completion. I use data from the U.S. Census and the American Community Survey to examine trends in Black–Latina/o and White–Latina/o college completion gaps and the factors that may explain them. A significant proportion of Latina/os in the United States are immigrants. Legal barriers to citizenship have grown over time, and these barriers have likely limited Latina/o access to higher education. College degree gaps can arise at two points in a student’s education trajectory. First, differences in college degrees arise when different groups enroll in college at different rates. Second, they arise when different groups have different college completion rates among those who enroll. I hypothesized that, due to legal barriers to citizenship, college enrollment differences would explain the majority of college degree gaps, not differences in college completion once enrolled. Indeed, I found that college enrollment gaps over-explained Black–Latina/o college degree gaps and explained the majority of White–Latina/os college degree gaps. I also found that if Latina/os had the same citizenship rates as the White and Black populations, the Black–Latina/o enrollment gaps would effectively disappear, and the White–Latina/os enrollment gaps would decline by up to 75%. My findings indicate that the Latina/o population's relatively low college completion rates can be partially explained by restricted access to citizenship. Our paper is the first to show the long-term development of these gaps and how critical citizenship laws are for immigrant education. Our paper was awarded the 2022 David Lee Stevenson Best Graduate Student Paper Award Honorable Mention from the ASA Section on Sociology of Education and the 2022 Graduate Student Paper Award Honorable Mention from ASA Section on Race, Gender, and Class.