This actually makes sense because a parasitic organism is geared entirely at sucking the blood of it's host to the last drop. If you are this organism nothing else matters so any potentially rival organism is a deadly threat to you. That's why the biggest worry of a thief is being robbed by other thieves. Projection. Americans allowed this cancer to fester and like with any other disease, when it makes itself known it might be too late or it's gonna be a huge battle to get rid of it and stay alive.