Not sure if you are or were aware of this but millions of people have been preparing for the possibility of a catastrophic event by relocating to rural homesteads or farms, as well as stockpiling food, water, personal defense armaments and other essential supplies with the intention of utilizing these preparations if the worst happens.  The latest executive order signed by President Obama on March 16, 2012 makes clear that in the event of a nationally deemed emergency all of these resources will fall under the authority of the United States government. 

The signing of the National Defense Resources Preparedness executive order grants the Department of Homeland Security, the Department of Agriculture, the Department of Labor, the Department of Defense and other agencies complete control of all US resources, including the ability to seize, confiscate or re-delegate resources, materials, services, and facilities as deemed necessary or appropriate to promote the national defense as delegated by the following agencies:

Sec. 201.  Priorities and Allocations Authorities.  (a)

(1)  the Secretary of Agriculture with respect to food resources, food resource facilities, livestock resources, veterinary resources, plant health resources, and the domestic distribution of farm equipment and commercial fertilizer;

(2)  the Secretary of Energy with respect to all forms of energy;

(3)  the Secretary of Health and Human Services with respect to health resources;

(4)  the Secretary of Transportation with respect to all forms of civil transportation;

(5)  the Secretary of Defense with respect to water resources; and

(6)  the Secretary of Commerce with respect to all other materials, services, and facilities, including construction materials.

(b)  The Secretary of each agency delegated authority under subsection (a) of this section (resource departments) shall plan for and issue regulations to prioritize and allocate resources and establish standards and procedures by which the authority shall be used to promote the national defense, under both emergency and non-emergency conditions.

Additionally, like the Selective Service established to draft Americans into the military in the event of war, all Americans are automatically registered for the National Defense Executive Reserve, an agency responsible for identifying experts and skilled laborers for jobs that may need to be performed during a national security. That means your entire work history is now stored, aggregated and flagged in a national database and you can be called on at any time and forced into service for national security reasons at a government-run institution or labor camp:

Sec. 501.  National Defense Executive Reserve.  (a) In accordance with section 710(e) of the Act, 50 U.S.C. App. 2160(e), there is established in the executive branch a National Defense Executive Reserve (NDER) composed of persons of recognized expertise from various segments of the private sector and from Government (except full time Federal employees) for training for employment in executive positions in the Federal Government in the event of a national defense emergency.

…

(d)  The head of each agency with an NDER unit may exercise the authority under section 703 of the Act, 50 U.S.C. App. 2153, to employ civilian personnel when activating all or a part of its NDER unit.  The exercise of this authority shall be subject to the provisions of sections 501(e) and (f) of this order and shall not be redelegated.

…

Sec. 601.  Secretary of Labor.  (a)  The Secretary of Labor, in coordination with the Secretary of Defense and the heads of other agencies, as deemed appropriate by the Secretary of Labor, shall:

(1)  collect and maintain data necessary to make a continuing appraisal of the Nation’s workforce needs for purposes of national defense;

(2)  upon request by the Director of Selective Service, and in coordination with the Secretary of Defense, assist the Director of Selective Service in development of policies regulating the induction and deferment of persons for duty in the armed services;

(3)  upon request from the head of an agency with authority under this order, consult with that agency with respect to:  (i) the effect of contemplated actions on labor demand and utilization; (ii) the relation of labor demand to materials and facilities requirements; and (iii) such other matters as will assist in making the exercise of priority and allocations functions consistent with effective utilization and distribution of labor;

No such thing as FEMA camps eh?  Nothing to worry about eh?  Every President has signed similar Executive Orders, right?  So what!  You still need to explain to me the need for such sweeping powers for the President no matter who He or She may be??