The President-Elect and Vice President-Elect are inaugurated at noon on January 20th, according to the 20th Amendment to the United States Constitution.

The President of the United States is not required to take the Oath of Office using the Bible.  In addition to the First Amendment's guarantee of freedom of religion,  Article VI of the United States Constitution states, "but no religious Test shall ever be required as a Qualification to any Office or  public Trust  under the United States."

On January 20, 2009 President-Elect Barack Obama will use the Bible that Abraham Lincoln used in 1861.

(Image of the Abraham Lincoln Bible held in the Library of Congress)

Five Presidents of the United States took the Oath in the Old House Chamber.

1. James Madison
2. James Monroe
3. John Q. Adams
4. Andrew Jackson
5. Millard Fillmore
   

Source: Architect of the Capitol

Article II, Section 1, of the United States Constitution states, "The executive Power shall be vested in a President of the United States of America.  He shall hold his Office during the Term of four Years. . ."

Amendment XXII to the United States Constitution sets the term limits for the Presidency of not more then 2 terms.  According to Section 1 of the 22nd Amendment to the United States Constitution, ratified on February 27, 1951, "No person shall be elected to the office of the President more than twice. . ."

The "Presidential Succession Act of 1947" established the order of Presidential succession as listed below:

Vice President (President of the Senate)

Speaker of the House of Representatives

President Pro Tempore of the Senate

Secretary of State

Secretary of the Treasury

Secretary of Defense

Attorney General

Secretary of the Interior

Secretary of Agriculture

Secretary of Commerce

Secretary of Labor

Secretary of Health and Human Services

Secretary of Housing and Urban Development

Secretary of Transportation

Secretary of Energy

Secretary of Education

Secretary of Veterans Affairs

Secretary of Homeland Security

Sources:
3 U.S.C. 19, (d) (1).
Congressional Research Service

Members of the U.S. House of Representatives are elected for a two year term, once every two years.  In order to be seated in the House, the Representative must be twenty-five years old.  The Representative must be a naturalized citizen of the United States for seven years, and live in the state for which they represent.

As set forth in Article I, Section 2, of the United States Constitution, "The House of Representatives shall be composed of Members chosen every second year by the People of the several States. . ."  Furthermore, "No Person shall be a Representative who shall not have attained to the Age of twenty five Years, and been seven Years a Citizen of the United States, and who shall not, when elected, be an Inhabitant of that State which he shall be chosen." 

The Speaker of the House administers the oath of office as follows:

“I, (name of Member), do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign or domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely, without any mental reservation or purpose of evasion; and that I will well and faithfully discharge the duties of the office on which I am about to enter. So help me God.”

According to a  Congressional Research Service report as of January 9, 2009, the current base salary for all Members of Congress is $174,000.

The number of Measures "Introduced" during the 110th Congress totaled 9,419.
The number of Measures "Passed" during the 110th Congress totaled 2,126.

The House Library holds the Résumé of Congressional Activity from the 80th through the present Congress.