In the United States, the combination of federal, state, and local laws, bodies, and agencies are responsible for carrying out operations. This combined group ensures that the people are the source of the government’s authority by electing representatives to serve in the government in all levels and provides for checks and balances by sharing power between different levels of government. The President and Vice President are the only public officials elected by all the citizens of the United States. Each serve a 4-year term and are eligible for an additional 4-year term. Each President adds his personal touches to the Oval Office during his occupancy. More information about the president and vice president can be found on the white house website (http://www.whitehouse.gov).