Separation of Powers
“This constitutionally mandated division of authority was adopted by the framers to ensure protection of our fundamental liberties”. Gregory V. Ashcroft, 501 US 452, 458 (1991) “just as the separation and independence of the coordinate branches of the federal government serves to prevent the accumulation of excessive power in any one branch, a healthy balance of power between the states and the federal government will reduce the risk of tyranny and abuse from either front.” Ibid”
[U.S. v. Lopez, 514 U.S.549 (1995)]