[David O. McKay] I asked what conclusion the brethren had reached regarding the matter. President Tanner said the same conclusion that was arrived at about two years ago, that Elder Benson should discontinue this kind of thing [political extremism], and particularly in stake conferences, and should limit himself to talking about the gospel and its applications. President Tanner said that he thought I made as clear a statement on the subject as he had heard made in the meeting of the Council of the First Presidency and the Twelve at that time. I said that there is no reason why we should not continue that understanding.
[David O. McKay diary as referenced in Gregory A. Prince and Wm. Robert Write, David O. McKay and the Rise of Modern Mormonism. Salt Lake City: University of Utah Press (2005)]