Our country needs a figurehead and representative for all these mundane functions, but does it have to be the President? Does it have to be the busiest man in the world? No. These functions should be handled as they are in the UK.
King Donald would not need a crown, his hair-do would suffice. He would not need Air Force I, he has his own planes and helicopters. King Donald has golf courses and enough real estate fit for….well….a King.