Former DOJ Official to Lead New Congressional Probe Practice at Cahill
Edward O'Callaghan, ex-Justice Department leader, joins Cahill Gordon & Reindel to establish a congressional investigations unit. The move reflects increased congressional scrutiny and demand for specialized legal expertise.
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Edward O'Callaghan, a former high-ranking official in the U.S. Department of Justice, has transitioned to Cahill Gordon & Reindel to spearhead a new congressional investigations practice. This development, announced on August 13, 2024, marks the end of O'Callaghan's four-year tenure at Wilmer Cutler Pickering Hale and Dorr.
O'Callaghan's move to Cahill Gordon & Reindel, a firm established in 1919, comes at a time when congressional investigations have gained prominence. The decision to launch a dedicated practice in this area reflects the increasing assertiveness of Congress in its investigatory role. O'Callaghan noted, "Both the majority and minority in both chambers are actively exercising their investigative authority."
The new practice aims to adopt a bipartisan approach, with O'Callaghan planning to recruit approximately a dozen lawyers with Capitol Hill experience. This strategy aligns with the historical roots of congressional investigations, which have been a part of U.S. politics since the nation's founding.
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O'Callaghan brings a wealth of experience to his new role. He previously served as the principal associate deputy attorney general under Rod Rosenstein, who appointed Special Counsel Robert Mueller in May 2017 to investigate Russian interference in the 2016 presidential election. The Special Counsel investigation, which lasted from 2017 to 2019, was a significant chapter in recent U.S. political history.
During his time at Wilmer Hale, O'Callaghan represented notable clients, including Norfolk Southern, one of North America's largest freight railroad companies. The railroad operator faced litigation following a toxic chemical spill in East Palestine, Ohio, in February 2023. O'Callaghan anticipates continuing this representation alongside his former colleagues.
O'Callaghan's career spans various prestigious positions. He led the Justice Department's National Security Division, established in 2006, and served as acting deputy attorney general. His experience also includes roles as a federal prosecutor in Manhattan's U.S. Attorney's Office, known for its high-profile cases, and partnerships at global law firms Clifford Chance and Nixon Peabody.
The establishment of this new practice at Cahill Gordon & Reindel reflects the evolving landscape of legal services in response to increased congressional scrutiny. As Congress continues to assert its investigative authority, the demand for specialized legal expertise in this area is likely to grow.