Kocher’s research interests focus on the political and legal geographies of immigration enforcement, policing and the immigration court system. His ongoing work interrogates the legal rationalities and everyday practices of producing “illegalized” immigrants through the U.S. immigration court system, and he examines how the immigration courts link up with local immigration enforcement on the ground. His research also includes grassroots immigrant rights and worker rights movements that seek to push back against deportation as a tool of social and labor control.

Kocher is a co-PI on the National Immigration Lawyer Survey (NILS), in collaboration with Maya Barak (University of Michigan-Dearborn) and Kathrine Abbott (University of New Hampshire), uses a mixed-methods approach to study the field of immigration lawyering and perceptions of procedural justice.

Kocher is currently chair of the Legal Geography Specialty Group within the American Association of Geographers and is active in the Law and Society Association.