This is a service offered by Cryptic Philosopher, free of charge, for agents of the federal Transportation Safety Administration (TSA), due to recent reports of some confusion among TSA airport security screeners regarding certain areas of the United States. Today, we will be discussing the District of Columbia.
- The District of Columbia (or “DC” for short) is a 68.3 square-mile district located on the north banks of the Potomac River. It is surrounded on three sides by the state of Maryland, and it borders the state of Virginia along the Potomac.
![By USA_Counties.svg: U.S. Census Bureau Blank_USA,_w_territories.svg: Lokal_Profil (USA_Counties.svg Blank_USA,_w_territories.svg) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons By USA_Counties.svg: U.S. Census Bureau Blank_USA,_w_territories.svg: Lokal_Profil (USA_Counties.svg Blank_USA,_w_territories.svg) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons](http://crypticphilosopher.com/wp-content/uploads/2014/07/750px-Washington_D.C._locator_map.svg_.png)
- It is also known as Washington; Washington, DC; “the District;” or simply “DC.”
- The District is divided into four quadrants: northwest, northeast, southwest, and southeast, with the U.S. Capitol at the center of the dividing lines.
![By USGS, modified by User:Postdlf (USGS satellite image) [Public domain], via Wikimedia Commons By USGS, modified by User:Postdlf (USGS satellite image) [Public domain], via Wikimedia Commons](http://crypticphilosopher.com/wp-content/uploads/2014/07/512px-DC_satellite_image.jpg)
- It is not part of any of the fifty U.S. states (Alabama, Alaska, Arizona, and so on through Wyoming.) The United States Constitution, in Article I, Section 8, Clause 17, gives Congress authority over a federal district to serve as the “Seat of Government of the United States,” which can be no bigger than “ten Miles square,” or one hundred square miles.
- Congress passed the Residence Act in 1790, which our first president, George Washington, signed into law on July 16 of that year. That law allowed the creation of a federal capital along the Potomac River, although President Washington got to decide exactly where.

![Erik Adam Klausz [CC BY-SA 2.0 (https://creativecommons.org/licenses/by-sa/2.0/)], via Flickr Erik Adam Klausz [CC BY-SA 2.0 (https://creativecommons.org/licenses/by-sa/2.0/)], via Flickr](http://crypticphilosopher.com/wp-content/uploads/2014/06/2242941940_53c8083521_z.jpg)
![By Maurits90 (Own work) [Public domain], via Wikimedia Commons By Maurits90 (Own work) [Public domain], via Wikimedia Commons](http://crypticphilosopher.com/wp-content/uploads/2014/06/Srebrenica-Potočari_Memorial_Center_2008.jpg)

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