U.S Institution: EXECUTIVE AND JUDICIARY IN THE UNITED STATES PART I Introduction In the history of all nations in the world, the United States is the first federal country that has the chance to build a political institution that entirely selected by citizens from the early days of national building. Experiencing the vicissitudes of history, the United States institution is specified in the original Constitution that still exists to this day. These principles are defined in this constitution and they have been used in many countries around the world as the model, because they reflect the fundamental aspirations of the people, the life liberty and the pursuit of happiness. “The chief magistrate derives all his authority from the people..."(Abraham Lincoln,1861).The federal entity created by the Constitution is the dominant feature of the American governmental system. Executive in the United States The power of the president 220 years ago in 1787, the Constitutional Convention did talk about the role of the executive branch and representatives of the states have debated and agreed upon a principled problem is that if the power belongs to the people institution must have real power, such ideas are mainly expressed in a collection of articles on federalism advocated (Federalist Papers) of the author Alexander Hamilton, James Madison, and John Jay. The U.S. Constitution in 1787 was the first written constitution in the history of mankind that although so far there have been amendments to the constitution, the results of this meeting, 7 clauses of the U.S Constitution is still in force reality. The power of the Executive Branch is vested in the President of United States, who also acts as head of state and Commander-in-chief of the armed forces. The U.S Constitution prescribes that the President must be elected. 220 years have passed, and so far we must also accept the fact that the framer writers of U.S Constitution calculated carefully, the head of the executive has a strong institution, real power and is capable of quick decisions and timely big issues of the country. In a constantly changing world, the pressures of the market, the public cannot allow the decision delays. Before the great issues of the country, the head of the executive has to express their views strongly and it is important to be responsible directly to the citizens. Presidential Powers includes executive power, legislative power and judicial power. The office of president of the United States is one of the most powerful in the world.