You know…now that you mention it…id like to propose something i dont ever recall seeing on this board. Could be wrong…just saying i personally havent seen it…
Some reason i saw this and thought "chess" so.. "all that d5 talk what would come before that" was my first thought. And when coming across promotions and one specifically oddly noted one i went to find what that meant. The following was the answer…
Pawn in C file captures piece at D1 (cxd1), then is promoted to queen (=Q), putting the King in check (+)
So still supposing q+=potus
What piece would have been at d1 that equates to the presidency? Castle? Hmm