Berke served as a state senator for Tennessee's 10th District from 2007-2012. He then went on to serve as Chattanooga's Mayor between 2013-2021, where he won widespread recognition for many accomplishments, including his work on digital equity and for his heroic efforts to establish a municipal broadband network through the local power company.
President Joe Biden appointed Berke to become the Agriculture Department's Rural Utilities Service administrator in early October. The role puts him in charge of helping with infrastructure improvements to rural communities. These include water and waste treatment, electric power and telecommunications services.