He isn’t being accused of being a citizen of Kenya, but of the UK - which is not correct IAW the law.
Here's a fact. Obama received British citizenship at birth and became a Kenyan citizen a couple of years later.
A fact you seem to ignore and disregard it by thinking that it has no effect on being a natural born United States citizen.
Actually he's not "being accused" of being a citizen of any other country, not directly. He's being "accused" of not having two US citizen parents, which he and his staff readily admit.