"... All the libertarian handbooks seem to make it sound "real easy" to get rid of departments and agencies, but if that were really the case we would have seen them being jettisoned by various presidents over the years - and that definitely hasn't happened."
Possibly - but the context of the sentence implies a certain level of frequency. But put another way, how many times - since say, WW2 - has a POTUS eliminated a cabinet level agency with an executive order, over the objections of congress?Playing fast and loose with the word "definitely" aren't you?