Robert Swan "Bob" Mueller III is a Republican who was appointed by President George W. Bush with his original ten-year term given a two-year extension by President Barack Obama, making him the longest-serving FBI director since J. Edgar Hoover.
Mueller is currently head of the Special Counsel investigation of Russian interference in the 2016 United States elections. He is a no-nonsense, strait-laced attorney and investigator, as well as the nickname "Bobby Three Sticks," in reference to his name's numeric suffix.
On May 17, 2017, Deputy Attorney General Rod Rosenstein appointed Mueller to serve as special counsel for the United States Department of Justice. Mueller oversees the investigation into “any links or coordination between Russian government and individuals associated with the campaign of President Donald J Trump, and any matters that arose or may arise directly from the investigation.
Mueller's appointment to oversee the investigation received support from both Democrats and Republicans. His non-partisan and non-political approach turned the FBI from an agency primarily focused on law enforcement into a top global organization handling counterespionage and counterterrorism.