Two examples of the exercise of presidential power that illustrate the process of constitutional change other than formal amendment

Concisebrief; to the pointclassificationthe action or process of classifying something according to shared qualities or characteristics:consentpermission for something to happen or agreement to do something:accountabilitythe fact or condition of being accountable; responsibilityassemblya gatheringunitary systema centralized government in which all government powers belong to a single, central agencyconfederacya loose union of independent statesfederal systema government that divides the powers of government between the national government and state or provincial governmentsconstitutiona plan that provides the rules for governmentconstitutional governmenta government in which a constitution has authority to place clearly recognized limits on the powers of those who governtotalitarianisma system of government in which the government has total controldictatorshipa form of government in which a single person holds unlimited political poweroligarchya form of government in which the power to rule is held by a small, usually self-appointed elitemonarchya system of government in which a king, queen, or emperor exercises supreme powers of governmentrepublica government in which voters hold sovereign power; elected representatives, responsible to the people, exercise that powerparliamentary governmenta form of government in which the executive branch is made up of the prime minister, or premier, and that official's cabinetpresidential governmenta system of government where an executive branch is led by a president who serves as both head of state and head of government.democracygovernment in which the people rulecitizenshipthe status of a person recognized under the custom or law as being a member of a country.free enterprise system [Capitalism]an economic system characterized by the private ownership of capital goods; investments made by private decision, not by government directive; and success or failure determined by competition in the marketplace.