Didn't people say that about a black president?
No, when did they say that?
Looking at the culture of the US, it's an aggressive society, it is. Yes, secretaries of state travel around to try gain peace deals and cease fires.
As an outsider you do not trust yourselves, it is written into your constitution to be this way, when it comes to your neighbours this mistrust becomes more evident Proof, look at your own gun laws and how close the vote is there.
Will US citizens at this point in history, considering what the world situation is at this time, go for a sex change in US Presidential politics....No.
If Clinton had of beat Barrack in the last nomination, she would have been president, maybe by a slimmer margin, maybe not for a second term, who knows. Anything would have been better than what the opposition was offering.
Clinton is better than Trump, I just do not think the US is ready. He picks on her specifically in his yapping because she is the weaker opponent in his eyes, while making out to Democrats she is his worry. Old trick, focus on an oppositions weak spot, make as though it was the oppositions strongest so they draw their defences there. Don't hear him say much about Bernie.
By doing this he weakens both opponents, divides opposition support forcing them into using resources on an opponent he can beat in an election, while weakening support for the other who is a danger to him. He did this to his own Republican party. While they where looking over there...he was concentrating over here and beat them.