=Compensation of the President.=--The Constitution declares that the President shall, at stated times, receive for his services a compensation which shall neither be increased nor diminished during the time for which he has been elected. He is also forbidden to receive any other emolument either from the United States or from any state. The salary of the President was $25,000 a year until 1873, when it was raised to $50,000. In 1909 it was raised to $75,000. Besides this salary there is an allowance of $25,000 a year for traveling expenses, and allowances for clerks, automobiles, house furnishings, fuel, lighting, etc., making in the aggregate some $250,000 a year. In the White House the nation furnishes the President with both a private and an official residence. =Extent of the President's Powers.=--The powers of the President are partly conferred by the Constitution, partly by acts of Congress and treaties, and are partly the result of usage and precedent. The power which has been wielded at any given time, however, has depended upon the initiative and force of the President and the extent to which he enjoyed the confidence of Congress and the people. Again, the power which may be rightfully exercised depends upon the state of affairs under which the office is administered. In time of war the power of the President may be so expanded as to be limited in effect only by the necessities of the national existence. The powers wielded by President Lincoln during the Civil War were so great as to cause him to be frequently referred to as a dictator. After the outbreak of the war with Germany in 1917 vast and unprecedented powers were conferred on President Wilson by a succession of far-reaching acts of Congress. Among the extraordinary powers thus conferred on him were: the control of the manufacture and distribution of commodities needful for war purposes, the requisition of ships and other war supplies, the fixing of prices of coal, wheat, sugar, steel, and various other commodities, the taking over and operation of private ship-building plants, the closing of liquor distilleries and the seizure of their stocks, the prohibition of exports to foreign countries, the seizure of German ships in American ports, the making of regulations in respect to the treatment of enemy aliens, and the taking over and operation of railroads, telegraphs, and telephones. =Classes of Powers.=--The various powers and duties which have been conferred on the President by the Constitution and the laws may be grouped under the following heads: 1. The power and duty of executing the laws, including the power to appoint, direct, and remove public officers. 2. The management of the foreign affairs of the country. 3. The power to command the army and navy. 4. Legislative powers, including the sending of messages to Congress, the calling of extra sessions, and especially the power to veto acts of Congress.