To his credit, that phrase was coined by Sen. Dan Moynihan.
That’s true, and Rush did credit Moynihan from time to time - Rush’ show is how I knew it was Moynihan who first coined it in fact.
Defining deviancy down has been going on for decades. It started with the disintegration of the sanctity of marriage thanks to the easing of divorce laws. No fault divorce was but the first nail in morality’s coffin.
That was followed by the sexual revolution and the removal of shame. Men and women are no longer expected to,save themselves for marriage. The age of “If it feels good, do it” has lead to where we are today.