This book is the result of many years of research and reflection, of learning and teaching in several different but intersecting fields: sociolinguistics, bilingualism, talk in interaction, interpreting, and language and law. Beginning as research for my dissertation at New York University and continuing with various journal articles, book chapters, conference presentations, and collaborations with colleagues, as well as in teaching about bilingualism or language and law at York University, my thinking about bilingualism, language choice, and court interpreting has gradually developed into the analysis presented in this book. In doing so, I have enormously benefited from the help and feedback of my teachers, colleagues, students, friends, and family and I am grateful to all of them, as I am to the agencies and institutions that provided financial and other support. This book is based upon research supported by the National Science Foundation under Grant No. BCS-0317838. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation. The initial research was also supported by New York University through a Dean’s Dissertation Fellowship. Work on additional transcription and annotation of portions of the data was supported by the Social Sciences and Humanities Research Council of Canada (SSHRC), under the Image, Text, Sound & Technology Program (Strategic Research Grant, file number 849-2009-29) for inclusion in the ComInDat database of interpreter-mediated interaction. Finally, work on this book manuscript was supported by the Faculty of Liberal Arts and Professional Studies at York University through a research course release in the winter of 2013 and a sabbatical leave during the 2013–2014 academic year. This study would not have been possible without institutional support from the administration of the courts in which I conducted research. I am indebted to Joseph Gebbia for his unwavering support that opened many doors for me. I am also grateful to Judge Karen Rothenberg for allowing me to extend my fieldwork to small claims court in Brooklyn. At the courthouses, many court officers and other staff members helped me with the day-to-day workings of planning and conducting my research, in particular by keeping me informed of interpreter schedules and by helping me obtain consent from participants (see Chapter 2). In particular, I would like to thank Frank Stanta for his friendly and attentive support of my fieldwork.