It actually dates back to the Truman-FDR days but as you can see the liberals used it to effectively attack enemies who criticized them in the 60’s and 70’s.
And the Nixon Administration (Paris Peace Talks, Treaty) didn’t like McIntire because he wanted to win the Vietnam War, hence the FCC shutting him down over the “Fairness Dcotrine.”
Liberal Democrats and some GOP enablers too. The same problem in this country today.
In 1954 then Senator Johnson authored it.
Dr. McIntire married his secretary of 40+ years at the age of 92, he died four years later of old age. His first wife,
Fairey, died years before.