I believe he knew the assassination was planned.
Of course he knew. It was confirmed when he asked Trump over the phone why he turned his head at that particular time.
“I believe he knew the assassination was planned.”
I won’t go so far as to say he helped plan it, because he’s addled brained. But he definitely knew.
Also who knew were Nikki Haley and Mike Pompeo. They probably already had their campaign buttons and bumper stickers ready for distribution.
He probably gave the order to kill Trump.
Either him or his wife.
He was attending Sat mass at the time. Makes you wonder.