Complex sentence: The Office of Special Counsel in the United States Department of Justice assumed the functions of the former Office of the Independent Counsel in 1999 (under Department of Justice regulation 28 CFR Part 600).
Split into simpler sentences: The Office of Special Counsel is an office of the United States Department of Justice. It assumed the functions of the former Office of the Independent Counsel in 1999 (under Department of Justice regulation 28 CFR Part 600).