“It was NOT just A BRIEFING.”
Johnson, himself, said it WAS just A BRIEFING.
And to repeat myself, whatever the briefing contained, it can’t hold a candle to allowing many millions of completely unvetted military-aged males into the country from every enemy country on Earth in a matter of months and financing their stay to the tune of $500 billion a year. It is utterly impossible.
That kind of thing is highlighted throughout history as the main strategy of an enemy to take a country down real, real fast.
It is indeed possible that he said it was A briefing, but so far as I know, he and top leadership would also get regular intelligence briefings which would also influence his perception of the problems that he would never get as a minor Congressman.