[A.J.Armitage]

I am curious when will the model democracies of the West, especially the US, nominate a Jew for their head of state?

The late nineteenth century. And he wasn't just nominated, he went all the way to the top. Well, technically Queen Victoria outranked Disraeli, but the PM actually runs things.

[kosta50]

I don´t know about late 19th century, he was born in 1804. He also married a woman who was probably not Jewish and I am not sure he was observant. You also hit the nail on the head when you distinguished between the Queen and PM. My question was regarding a head of state, not a head of government.