The Great Seal is a principal national symbol of the United States. The phrase is used both for the physical seal itself, which is kept by the United States Secretary of State, and more generally for the design impressed upon it. The obverse of the Great Seal depicts the national coat of arms of the United States. and the reverse features a pyramid topped by an Eye of Providence. The seal contains three Roman phrases: E Pluribus Unum ("Out of many, one"), Annuit cptis ("(Providence) has favored out undertakings"), and Novus ordo seclorum ("New order of the ages").

Largely designed by Charles Thomson, secretary of the Continental Congress, and William Barton, and first used in 1782, the seal is used to authenticate certain documents issued by the federal government of the United States. Since 1935, both sides of the Great Seal have appeared on the reverse of the one-dollar bill. The coat of arms is used on official documentsincluding United States passportsmilitary insignia, embassy placards, and various flags. The Seal of the President of the United States is directly based on the Great Seal, and its elements are used in numerous government agency and state seals.

Today's official versions from the Department of State are largely unchanged from the 1885 designs. The current rendering of the reverse was made by Teagle & Little of Norfolk, Virginia, in 1972. It is nearly identical to previous versions, which in turn were based on Lossing's 1856 version.

The United States Congress is the legislature of the federal government of the United States. It is bicameral, being composed of a lower body, the House of Representatives, and an upper body, the Senate. The Congress meets in the United States Capitol in Washington, D.C. Both senators and representatives are chosen through direct election, though vacancies in the Senate may be filled by a governor's appointment. Congress has 535 voting members: 100 senators and 435 representatives. The vice president of the United States has a vote in the Senate only when senators are evenly divided. The House of Representatives has six non-voting members.The sitting of a Congress is for a two-year term, at present, beginning every other January. Elections are held every even-numbered year on Election Day. The members of the House of Representatives are elected for the two-year term of a Congress. The Reapportionment Act of 1929 establishes that they be elected in single-member constituencies or districts by first-past-the-post and that Congressional districts be apportioned to states by population every ten years using the United States Census results, provided that each state has at least one Congressional representative. Each senator is elected at-large in their state for a six-year term, with terms staggered, so every two years approximately one-third of the Senate is up for election. Each state, regardless of population or size, has two senators, so currently, there are 100 senators for the 50 states.

Article One of the United States Constitution requires that members of Congress must be at least 25 years old (House) or at least 30 years old (Senate), have been a citizen of the United States for seven (House) or nine (Senate) years, and be an inhabitant of the state which they represent. Members in both chambers may stand for re-election an unlimited number of times.

The Congress was created by the Constitution of the United States and first met in 1789, replacing in its legislative function the Congress of the Confederation. Although not legally mandated, in practice since the 19th century, Congress members are typically affiliated with one of the two major parties, the Democratic Party or the Republican Party, and only rarely with a third party or independents affiliated with no party. In the case of the latter, the lack of affiliation with a political party does not mean that such members are unable to caucus with members of the political parties. Members can also switch parties at any time, although this is quite uncommon.