It's the Principle of Subsidiarity.
Well, the Fed Department of Interior has discovered that law and is implementing it.
...The Bureau of Land Management (BLM) is relocating 27 employees from Washington, D.C., to the agency’s new headquarters in Colorado and another 220 to field offices out West, Government Executive (GE) reported Tuesday. The relocated employees reportedly have until Dec. 12 to agree to the move; if they don’t accept the terms, then they’ll be fired....The Rulers should live among The Ruled. That's a corollary to the Law.
What's keeping Education, Energy, Housing/Urban, Transportation, and EPA from doing the Constitutional thing? Hmmmmmm??