Prior to his work as a media practitioner, Klein first served in the military. Two years after he graduated from college, he enlisted in the
U.S. Navy where he became an officer until 1946. After this stint, he became the news editor of Alhambra
Post-Advocate and special correspondent for
Copley Newspapers. Klein kept these works until 1950. There was controversy about this part of his career because the Copley Newspaper chain has been rumored to be associated with the
Central Intelligence Agency since 1947. In 1946, while still connected to the Post-Advocate and the Copley Newspapers, Klein was contracted to be the press agent for Richard M. Nixon's campaign for
California's 12th congressional district seat. The candidate's victory in this election cemented a relationship with the young California politician. He was chosen to become Nixon's press agent for the California
United States Senate seat campaign, which was won against
Helen Gahagan Douglas in 1950. From 1950 to 1968, Klein worked for the
San Diego Union serving first as features and editorial writer. He was promoted to editorial page editor, associate editor, and executive editor, before finally rising to the editor position. For the
Dwight D. Eisenhower-Nixon California Presidential campaign in 1952, Klein was tapped as the publicity director. During the 1956 reelection campaign, Nixon again selected him as his national assistant press secretary. When Nixon decided to run for the presidency in 1960, Klein became his national press secretary. He was also Nixon's press secretary during his campaign for
Governor of California in 1962. In 1968, Klein served as Nixon's National Communications Manager in his second run for the presidency. After the inauguration in 1969, Klein was chosen to be the new Communications Director for the Executive Branch, a post he held until his resignation on July 1, 1973. Klein joined the private sector again after his involvement with the Nixon administration. He held the position of vice president of Corporate Relations at
Metromedia, Inc. from 1973 to 1977. He became a media consultant from 1977 to 1980 before serving as a Copley Press' editor-in-chief until his retirement in 2003. ==Memberships and awards==