This presentation frames undocumented and precariously documented migration as a crisis of capitalism. Empirically, it addresses both the working conditions of Mexican temporary foreign workers (TFWs) employed in Canada under the Seasonal Agricultural Worker Program (SAWP), and the Canadian government’s detention and deportation regime in which they may be caught up. More abstractly, both topics instantiate the existential situation facing Mexican (or more generally Latinx) migrants crossing the Canadian and US borders from elsewhere, and thereby analytic consideration in terms of post-colonial theorizing about borders. The question of what drives residents of one country (Mexico) to undertake the often perilous journey of crossing borders to take up work in another country (US, Canada) invites analysis of the political economy of contemporary North America with the focus on Mexico. This political economic analysis is rooted in Marxism.