Complex sentence: He served as special counsel for the Senate Ethics Committee's 1989--1991 investigation of the Keating Five, and in 2008 defended John McCain from allegations by the "The New York Times" of an improper relationship with a Washington lobbyist.
Split into simpler sentences: He served as special counsel for the Senate Ethics Committee's 1989--1991 investigation of the Keating Five. In 2008, Bennett was hired by John McCain to defend allegations by the "The New York Times" of an improper relationship with a Washington lobbyist.