good luck finding a non-partisan head of state. a nice fantasy until it hits the wall of reality...
"Non-partisan" is a liberal trick concept. What it really means is for anyone who stands against liberals to abandon their position in the name of "fairness" - another liberal concept. All of this is meant to impress young people, soccer moms, and government-dpendent minorities. Everyone else knows it's garbage - including Leftists. You ever - ever - hear a Leftist or liberal say THEY need to be non-partisan? LOL! Instead, they define their partisan positions AS non-partisan, and laugh as the Right tries to parse their word games.
No, everyone is partisan, and everyone discriminates, and that's good. What's bad is when people deny their positions, and then claim they have no position. That creates the world we live in today - the world of psychopathic, ahbitual, compulsive, paranoid liars.
Any king would have to be partisan as hell - and make his partisanship crystal clear - because that would be the reality anyway.
So dump the non-partisanship nonsense. What matters is what such a king would be partisan about, what he would stand for, and what he would stand against. America is unique and brilliant because the Founders decided that no king could be found who would stand for true justice, in part because no country yet had been created upon true justice. So they invented America, based on natural law and negative rights - and changed the world.