This article explores critical ways that migrant groups engage in diverse forms of resistance. In this comparative case study, we draw on our longitudinal ethnographic research on migrant groups, particularly those that are characterized as undocumented, with a focus on the ways in which they engage in activism and resistance in China and the United States, respectively. We aim to expand the literature about comparison by asking: how is comparison understood differently through the lens of crisscrossing, and what productive insights can be uncovered through this theoretically informed approach? What implications might crisscrossing have for studying grassroots level resistance from migrants across borders?