The DNC and RNC will determine who represents them. But, the states are the ones who say who goes on the state ballot...
And hence... that’s why when you enact a state law that requires a candidate to produce his birth certificate... he will produce it — or else he won’t be on the ballot in that state.
So, he might be the RNC or the DNC candidate — but his name won’t be on the ballot in that state... LOL...
I REALLY have other things to do. Have a pleasant day.