I think I understand it. Allowing individual lawsuits to proceed would have eventually exposed Saudi Arabia as materially culpable - even more than Iraq - much, much more.
Were that to have occurred, Iraq wouldn’t have been invaded because of a public clamor to invade Saudi Arabia. And, certain elites in this country could not have that.
That’s my take on it.
Yes, the Saudis were definitely players on 9-11, but....not the only ones.