SInce we, in America, have either just come here, or we are the progeny of former immigrants, how long, and under what conditions do you, or your family, have to be here before your blood can be poisened by new immagrants. A term that comes to mind, could be "Landed". Once you have meet the criteria of being Landed, then you are no longer a poisiner, but a poisonee. I cannot figure out the time it takes to become Landed, and thus vulnerable. Criteria is less complicated and finite. Could it be race? Could it be origin? I don't know. When the Irish came here in droves between 1851 and 1920 when did they loose their ability to poison the gentry? Same could be said of the Germans, the Italians, or any other group. I remain in search of an answer.