What are the nine roles of the president ?

Chief of State - Symbolic head of the country
Chief Executive - Executes the laws, appoints main federal officials, permits pardons and reprieves.
Chief Economist - Tries to influence the country
Chief Diplomat - Meets and negotiates with Foreign leaders
Commander in Chief - In charge of the US Army , Runs and maintains the armed forces.
Chief Legislator - reviews each bill, sign it to make law or veto it, introduces legislation and works with Congress on the budget.
Chief of Party - helps the candidates of his or her political party to get elected or appointed to office.
Chief Citizen: Represent the public and works for the public interests.
Chief Administrator: In-charge of the executive branch of the federal government.