I wasn´t able to watch POTUS´speech yet. Will do soon.

But this clip got my attention. Mentioned before. I just observed, that he is doing this sign often. And if I remember right, always with the "pause" or something in reference to that.

Looks like the Q in sign language.

“Ladies and gentlemen, I’ve been preparing my entire life for this battle.

https://twitter.com/realLizUSA/status/1707205294097313887