All he has to do is look!
His confidence can only come from this being projection (or full-on delusion I guess). He’s sure they’re rigged because he rigged them and still didn’t win. That’s how he “knows” they’re rigged.
Anyway… The US is a cringey shit hole. Can we accept that yet, and just move on without them? They’ve already abandoned themselves, so what are WE waiting for?