Federal, state and local agencies each regulate different and sometimes overlapping aspects of 5G and wireless communications. The Federal Communications Commission (FCC) regulates interstate and international communications by radio, television, wire, satellite and cable in all 50 states, the District of Columbia and U.S. territories. The FCC is the primary authority for communications law and regulation and preempts state and local governments from regulating key aspects of infrastructure deployment. For instance, state and local governments cannot regulate the environmental effects of radiofrequency exposure to the extent the emissions comply with FCC guidelines. At the state level, California grants authorized telephone corporations access to the public rights-of-way to provide services and the California Public Utilities Commission (CPUC) regulates pole attachments and safety standards to aboveground and underground infrastructure. Subject to federal and state limitations, local governments regulate the design, placement, operation and maintenance of wireless infrastructure within their respective jurisdictions.