No, it isn't that most evil
of serial killers, nor is it any President past or present. Benedict Arnold died in London 212 years ago today.
If you are not an American, the name probably doesn't mean much to you. If you are an American, it is a name you will probably avoid using, except perhaps as an epithet against someone who has betrayed your trust. it remains to be seen if one day the name Bradley Manning will be as infamous, but no one could attribute the same naïvetee to the man who rose to the rank of general in his own army and was then commissioned as a brigadier general by the enemy.
A brief biography of Arnold can be found here
. You can also find some informative documentaries about him on YouTube. It is rare indeed for a man to achieve such a high rank in the military or government and then to betray his country, but his motives appear to have been a mixture of wounded pride over the shabby way he believed he was treated, and filthy lucre - because truly every man does have his price.
The disdain with which Americans regard Arnold to this day can be seen from the two pictures below. At times it seems that the name Benedict has been even less popular than that of the man everyone is allowed to hate.
Of course, Benedict Arnold is far from the only highly placed American to betray his country; many others have followed, but as the man said, when treason prospers, none date call it treason.