A prominent and major flaw in the field of Migration Studies is the un-reflexive handling of the concept of power and the uncritical use of the concepts of assimilation and integration. Since the main focus in the field of integration and assimilation studies has been on attitudes and practices of migrants (both non-white and white) and their descendants, the power of white people without a migration background and its influence on societal outcomes has remained largely unstudied. In this chapter, we argue that in order to make this necessary reflexive turn in integration and assimilation studies, crucial insights from Critical Race Theory can be used to push the theoretical and methodological debate in a new direction. This proposed shift does not only concern a shift towards studying power relations, but also entails a methodological shift regarding what should be the main focus of research. In mainstream integration and assimilation studies, the emphasis is still largely on ethnic or racial minority groups. We argue that we must also focus on white people without a migration background and their impact on societal contexts in which non-white people and/or people with a migration background try to participate, belong and achieve social mobility.