[Hugh B. Brown] [After reviewing media reaction] we [Brown and McKay] agreed that we had done the right thing in letting the members of the Church and the world know that the Church does not in any way endorse or subscribe to the John Birch Society. You [McKay] mentioned that we might have erred in that we did not call the Bensons in before making the announcement. I called your attention to the fact that we had called Brother Benson in and discussed Reed's activities during the campaign in disregarding our former statement regarding the use of our chapels and meeting places for political purposes. At that same meeting we discussed the John Birch Society, and Brother Benson denied having any association with them.
[Source: Hugh B. Brown summary of meeting with David O. McKay, 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)]