Republicans used to defend any conceivable expression of executive privilege over Congress and the courts--now Democrats do that, while Republicans take up the old cry of imperial presidency.
Republicans are the only one to defend executive priviledge 
mnli hypothesis: Republicans are the only one to defend executive priviledge  premise: Republicans used to defend any conceivable expression of executive privilege over Congress and the courts--now Democrats do that, while Republicans take up the old cry of imperial presidency.