Migrants are present in every region of the world. The call to accompany and serve them is a responsibility given to the entire body of the Society, and it must resonate with everywhere we are present. Case studies of critical situations at borders and different migratory flows in several parts of the world offer an insightful instrument for analysing the challenges that many Jesuit institutions face in their efforts to help and support displaced people, forced migrants, and refugees. This book has detected that studies and statistics are absent from what happens at borders in a global context. This lack of information is due to the territories where migration occurs and the difficulty that nation-states encounter while monitoring the flow of migrants. Thus, this rise in mobility demonstrates that there must be agreements between countries for better migration management. There is a lack of research and the pressing need to investigate what is happening. Our mission and driving force behind this proposal are to present a global vision of borders from its most vulnerable human beings, migrants.