The president of the United States (POTUS) is the head of state and head of government of the United States. The president directs the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces.
The power of the presidency has grown substantially since the first president, George Washington, took office in 1789. While presidential power has ebbed and flowed over time, the presidency has played an increasingly significant role in American political life since the beginning of the 20th century, with notable expansion during the presidency of Franklin D. Roosevelt. In modern times, the president is one of the world's most powerful political figures – the leader of the only remaining global superpower. As the leader of the nation with the largest economy by nominal GDP, the president possesses significant domestic and international hard and soft power.
Article II of the Constitution establishes the executive branch of the federal government and vests executive power in the president. The power includes the execution and enforcement of federal law and the responsibility to appoint federal executive, diplomatic, regulatory, and judicial officers. Based on constitutional provisions empowering the president to appoint and receive ambassadors and conclude treaties with foreign powers, and on subsequent laws enacted by Congress, the modern presidency has primary responsibility for conducting U.S. foreign policy. The role includes responsibility for directing the world's most expensive military, which has the second largest nuclear arsenal.
The president also plays a leading role in federal legislation and domestic policymaking. As part of the system of separation of powers, Article I, Section 7 of the Constitution gives the president the power to sign or veto federal legislation. Since modern presidents are typically viewed as leaders of their political parties, major policymaking is significantly shaped by the outcome of presidential elections, with presidents taking an active role in promoting their policy priorities to members of Congress who are often electorally dependent on the president.
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This course focuses on the physical mechanisms at the origin of the transition of a flow from laminar to turbulent using the hydrodynamic instability theory.
The course investigates the history of architecture and town planning between the 17th and 19th centuries, its architects and buildings, and highlights the theoretical, artistic and technical issues i
Ce cours constitue la seconde partie d'un enseignement consacré aux bases théoriques et pratiques des systèmes d’information géographique. Il propose une introduction aux systèmes d’information géogra
Ce cours constitue la seconde partie d'un enseignement consacré aux bases théoriques et pratiques des systèmes d’information géographique. Il propose une introduction aux systèmes d’information géogra
Explores dependability in industrial automation, covering reliability, safety, fault characteristics, and examples of failure sources in various industries.
The Presidential Medal of Freedom is the highest civilian award of the United States, alongside the Congressional Gold Medal. It is an award bestowed by decision of the president of the United States to recognize people who have made "an especially meritorious contribution to the security or national interests of the United States, world peace, cultural or other significant public or private endeavors." The award is not limited to U.S. citizens and, while it is a civilian award, it can also be awarded to military personnel and worn on the uniform.
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America and consisting of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations.
Calvin Coolidge (born John Calvin Coolidge Jr.; ˈkuːlᵻdʒ; July 4, 1872 - January 5, 1933) was an American attorney and politician who served as the 30th president of the United States from 1923 to 1929. Born in Vermont, Coolidge was a Republican lawyer from New England who climbed the ladder of Massachusetts politics, becoming the state's 48th governor; his response to the Boston Police Strike of 1919 thrust him into the national spotlight as a man of decisive action.
We demonstrate engineering of carrier states in the conduction band (CB) and valence band (VB) of site-controlled InGaAs/GaAs quantum dots (QDs) grown into pyramidal recesses, by controlling their shape, size, and composition. QDs with CB level separation ...