Because they prefer the probably better president to the possibly superior human being.
They prefer a good president to a good human being.
A superior human being always is the best choice for president.
The person is sitting in his house.
The man is stripping on the beach.
Duke William was away in England when Notre-Dame's consecration was carried out.
A man is smoking while talking into his phone.
A person eating sponges
The nun is eating lunch.