This is just CYA for Clooney et al. They have known this for a long time. And they have seen it up close.
Hundreds, if not thousands of people have witnessed this up close and in person. What shameful people they are by intentionally hiding his mental incompetence from America by not speaking out....until now. too late.
He and Julia Roberts are very narrow minded, small, plastic individuals of negligible intelligence and even less ethical inclinations.