“Not a great quote, as it was used to deflect from the truth about communist influences in the United States. A classic non-answer used to inflame people’s emotions to hide the truth.”
I cited the quote, not its context.
Besides being a lawyer, Welch was also an actor (for real). Thus, he played to the audience; it was pure theater and no substance.
Those who know the context know it was theater, and a way to evade the truth.
And now, those who didn’t know the context now know it.