Bozell was a consistent supporter of Senator Joseph McCarthy, teaming up with fellow National Review associate William F. Buckley Jr. in 1954 to write a ringing defense of him in, "McCarthy and His Enemies." Defending not only the man, but the phenomenon, he wrote, “McCarthyism … is a movement around which men of good will and stern morality can close ranks.” He later joined McCarthy’s staff, shortly after Roy Cohn left, writing McCarthy’s defense speech before the committee seeking to censure him, as well as a series of policy speeches through at least 1956.