Article 2, Section 3

He shall from time to time give to the Congress Information of the State of the Union, and recommend to their Consideration such Measures as he shall judge necessary and expedient; he may, on extraordinary Occasions, convene both Houses, or either of them, and in Case of Disagreement between them, with Respect to the Time of Adjournment, he may adjourn them to such Time as he shall think proper; he shall receive Ambassadors and other public Ministers; he shall take Care that the Laws be faithfully executed, and shall Commission all the Officers of the United States.

1.Bill of Rights, secs. 1 AND 2, 2, 16 Dec. 1689
2.Virginia Declaration of Rights, sec. 7, 12 June 1776
3.Delaware Declaration of Rights and Fundamental Rules, sec. 7, 11 Sept. 1776
4.Vermont Constitution of 1786, CH. 1, ART. 17
5.Records of the Federal Convention
6.William Symmes to Capt. Peter Osgood, 15 Nov. 1787
7.St. George Tucker, Blackstone's Commentaries 1: App. 344, 345--47, 1803
8.Thomas Jefferson to John B. Colvin, 20 Sept. 1810
9.William Rawle, A View of the Constitution of the United States 34--35, 147--50, 171--73 1829 (2d ed.)
10.Joseph Story, Commentaries on the Constitution 2:§ 892; 3:§§ 1555--57, 1833