Rep. Mark Green, R-Tenn., chairman of the House Homeland Security Committee, arrives before the start of a House Homeland Security Committee hearing in January of 2024. (Photo by Kent Nishimura/Getty Images) House Homeland Chairman Mark Green’s departure could leave congressional cyber agenda in limbo Green, R-Tenn., has championed legislation on the cyber workforce, renewal of a cyber threat information sharing bill and more. Jun 10, 2025 By Tim Starks