Revelation 10:17 has 7 kings, not kingdoms, per the Greek. One can definitely make the argument that, (whichever kings one believes to be them), 6 kings/emperors have fallen from Egypt, Assyria, Neo-Babylonia, Persia, Greece and Rome. That would leave the USA as the 7th and there be lots of people thinking Joe didn't win the 2020 election, which means he's not an elected President but a king instead. Yes, I'm speculating a bit, but its a theory.