Gerald Ford (1913–2006) American politician, 38th President of the United States (in office from 1974 to 1977)
Ford is known to have used the words "truth is the glue that holds government together" several times prior to this.
1970s, First Presidential address (1974)
Context: I believe that truth is the glue that holds government together, not only our Government but civilization itself. That bond, though strained, is unbroken at home and abroad. In all my public and private acts as your President, I expect to follow my instincts of openness and candor with full confidence that honesty is always the best policy in the end.