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Quo warranto (Medieval Latin for “by what warrant?”) is a prerogative writ requiring the person to whom it is directed to show what authority they have for exercising some right or power (or “franchise”) they claim to hold.
Source: Quo warranto – Wikipedia
The U.S. government is also preparing for the worst. In March 2012, former President Obama signed an executive order titled, “National Defense Resources Preparedness” into law, giving agencies such as the Department of Homeland Security, Department of Agriculture, Department of Labor and Department of Defense the authority to seize resources, materials and facilities it deems necessary to ensure national defense.