Additional Study Information: The purpose of this study is to determine if the use of immunotherapy nivolumab and the targeted therapy cabozantinib prior to removal of the kidney will increase the number subjects who are without any visible kidney cancer in their body at some point during the course of treatment. The study will also evaluate the changes that nivolumab and cabozantinib cause in the cells adjacent to the tumor in order to understand how the study medicines work and how cancer cells become resistant to these medicines.