[Quality_Not_Quantity]

Why does President Trump frequently hold his hands in a triangle position/symbol?

It's called 'steepling' - people do it all the time. It doesn't mean anything (unless you believe that everything means something, that is).

[Daffynition]

Yes. *Everything* means something.

I want one of those pins ...they can become like one of the infamous *challenge coins*

https://www.youtube.com/watch?v=JIeRLUsKYtM