The organization was created to provide normal and emergency communications requirements in support of the President. The organization provided mobile radio, Teletype, telephone and cryptographic aides in the White House and at "Shangri-La" (now known as Camp David).
The organizational mission was to provide a premier communication system that would enable the President to lead the nation effectively. As of July 29, 2011, the White House Communications Agency is commanded by Col. Clinton Bigger (United States Army) and the Agency's Senior Enlisted Service member is CSM Willie Clemmons (United States Army).
While not confirmed, the origins almost certainly arise from the less than pleasant sights, sounds and smells from hotel loading docks and service elevators around the world.
Guy on roof, holding the box so it doesn't crush me: "We're WHCA..We Haul Crap Anywhere...remember?"
Me: "Oh yeah, that's right...I think my back just gave out again."