Migration is typically seen as a transnational phenomenon, but it happens within borders, too. Oaxaca in Motion documents a revealing irony in the latter sort: internal migration often is global in character, motivated by foreign affairs and international economic integration, and it is no less transformative than its cross-border analogue. Iván Sandoval-Cervantes spent nearly two years observing and interviewing migrants from the rural Oaxacan town of Santa Ana Zegache. Many women from the area travel to Mexico City to work as domestics, and men are encouraged to join the Mexican military to fight the US-instigated “war on drugs” or else leave their fields to labor in industries serving global supply chains. Placing these moves in their historical and cultural context, Sandoval-Cervantes discovers that migrants'experiences dramatically alter their conceptions of gender, upsetting their traditional notions of masculinity and femininity. And some migrants bring their revised views with them when they return home, influencing their families and community of origin. Comparing Oaxacans moving within Mexico to those living along the US West Coast, Sandoval-Cervantes clearly demonstrates the multiplicity of answers to the question, “Who is a migrant?”