Answer: state of nature / social contract
Explanation:
Theorists like Thomas Hobbes, John Locke, and Jean-Jacques Rousseau, developed different theories about the state of nature and the social contract, although their underlying ideas shared some similarities.
The state of nature refers to a real or hypothetical condition of humanity before any political association, and the social contract would be also either a real or hypothetical understanding about the rights and duties of the rulers and the ruled people.
People like Southern Democrats, Conservative Republicans, and corporate leaders didn't like the New Deal because it opposed the idea of a laissez-faire philosophy to govt. Southern Conservatives didn't favor the deal because they feared that the Jim Crow Laws of their region were threatened and corporate leaders and Republican Conservatives did not want the govt. to become anti-laissez-faire. Many Conservatives thought that the deal would go on to introduce acts like the Social Security Act that would allow people to become lazy as in some cases people use the govt. However, for the Second New Deal, FDR campaigned himself as an "ordinary working-class American" which republicans (critics) favored. FDR has stated that he though direct payments to the poor were "a narcotic, a subtle destroyer of the human spirit." -- Republicans agreed with that, too.
If the citizens were not required, no one may want to. On jury, you may have a case that may take a long time and you may end up sentencing someone to death. It is likely if citizens were not required that no one would want to volunteer.