Early in my Libertarian path of discovery I came across the following page on the Mises website (Link below) . There is also a you tube of him giving the speech. It would be a video that all incoming politicians on any side of the isle should be made to watch. Once again it is delivered in style that is consumable and well within the reach of all people to understand. Well worthy of a listen and a read !! 

https://mises.org/library/pursue-cause-liberty-farewell-congress