We analyze data from the National Survey of Early Care and Education (NSECE) to (1) document the parental preferences and child care arrangements of immigrant families with young children; (2) determine the factors that predict immigrant families' child care settings, including the relative roles of parental preferences for different care types, family characteristics, employment characteristics, the local community context, and local child care marketplace characteristics; (3) identify the state subsidy policies that promote subsidy participation among eligible immigrant families, and (4) estimate how much subsidy receipt facilitates access to regulated care settings for potentially eligible immigrant families. In this brief, we review our research questions and methods and then focus on the challenges and questions that arise when using secondary data to look at early care and education experiences of immigrant households, with implications for future research. (author abstract)