Ellis Arnall was one of the most successful and progressive governors to ever hold office in Georgia especially considering the era he held office. Under him, Georgia's Institutions of Higher learning were re-accredited and the state's penal system was reformed.
Arnall earned the support of teachers in the state when he set up a retirement program that would see them enjoy benefits when they retired because he had a huge respect for the educational system.
One of the rights of congress is the right to impeach the president if they think he is to tyrannical. Checks and balances itself though is an example of separation of powers