They know that Kerry will commit treason.
Kerry: Romney 'breathtakingly off target' on Russia - May 25, 2012 - "I think that candidate Romney has been breathtakingly off target, and naive and in fact wrong in his judgment about Russia when he said Russia is our number one foe. I cannot think of any statement that frankly is more inappropriately threatening and simply wrong by any calculus than that."
I am here to tell you that American soldiers raped, cut off ears, cut off heads, taped wires from portable telephones to human genitals and turned up the power, cut off limbs, blown up bodies, randomly shot at civilians, razed villages in fashion reminiscent of Jenjhis (sic) Khan, shot cattle and dogs for fun, poisoned food stocks, and generally ravaged the countryside of South Vietnam in addition to the normal ravage of war, and the normal and very particular ravaging which is done by the applied bombing power of this country.
Deploying a sleeper agent is so difficult. It takes years of training and then placement in America.
It's much easier when the Americans pick a traitor on their own.