From the choices, please select the major factors that result in government failure.
Choice 1: The United States uses a graduated tax system.
Choice 2: Production decisions are often made independently of government oversight.
Choice 3: Public choices involve many actors with their own economic objectives.
Choice 4: Correctly diagnosing the cause of a market failure is difficult.
Choice 5: Politicians often want to keep constituents happy more than they want to correct market failures.