If men were angels, no government would be necessary. If angels were to govem men, neither external nor internal controls on
 government would be necessary. In framing a government which is to be administered by men over men, the great difficulty lies
 in this: you must first enable the goverment to control the governed, and in the next place oblige it to control itself.
 -James Madison, Federalist Paper 51
 Which concept is James Madison discussing?
 A strict interpretation
 B. individual rights
 C. checks and balances
 D. federalism