Stephen Kelly, former congressional affairs chief for the FBI, is working as a part of special counsel Robert Mueller’s team to investigate Russia interference in the 2016 election, serving as a congressional liaison.

“Stephen Kelly is exactly who I would hire if I wanted to share as little information with Congress as possible,” a Capitol Hill staffer told the Daily Beast for a report published Tuesday evening. Before working at the FBI, Kelly worked for Sen. Patrick Leahy’s, D-Vt., Judiciary Committee staff.