Usurpation The Weapon By Which Freedom is Destroyed

Whenever the people who make up the federal government, either as individuals, as departments or as branches, exercise power not expressly delegated to them as specified in the Constitution, they are usurping the authority of either the states or the people.

Source:
http://www.tenthamendmentcenter.com/2010/06/16/usurpation-the-weapon-by-which-free-governments-are-destroyed/