Gang of Eight are members of Congress who are entitled to receive high-level intelligence briefings.
"A position within the Gang of Eight comes as a result of holding one of the following eight positions: 1. The Speaker of the House, 2. The Minority Leader of the House, 3. the Majority Leader of the Senate, 4. the Minority Leader of the Senate, 5. the Chairperson of the House Permanent Committee on Intelligence, 6. the minority leader from the same committee; 7. The Chairperson of the Senate Intelligence Committee and 8. the minority leader of the same committee."