Jarvan The Fourth [Skin Concept for our Demacian who hasn't got one for a while]
Jarvan the Fourth or Jarvan the 4th would work, to defer the name from Jarvan IV
Anyways his flag could have an American flag instead, and other little details.
His Q would be a similar animation, his passive not much different maybe. His W definetly has potential, such as creating a waving flag for the particles or just a new color. His E would of course bring down the American Flag. And then his ultimate would look similar to now, except now he yells "DEMOCRACY!" at the end of it.