und or implied in parts of other articles of the Constitution, two general and important restrictions are placed on the powers of Congress: the presidential veto and the invalidation of legislation as unconstitutional by the US Supreme Court. The veto power of the president is defined in Article I, Section 7. Every bill passed by Congress must be submitted to the president, who, according to the Constitution, has ten days in which to sign or veto the bill. If vetoed by the president, a bill cannot become law unless passed a second time and by a two-thirds majority of those voting in each house. If the president fails to act within ten days, the bill becomes law without the presidential signature, if Congress is in session. If Congress has adjourned in the interim, the bill lapses, and failure of the president to sign it is known as a pocket veto.
A stronger restriction than the presidential veto on the power of Congress is the power of the Supreme Court to invalidate legislation that violates the Constitution. Although not specifically vested with this power, the Supreme Court, in the case of Marbury v. Madison in 1803, held for the first time that its right to invalidate legislation as unconstitutional was implied in the Constitution. With occasional exceptions, the power thus assumed by the Supreme Court has been honored ever since that time. The power of judicial review has, however, been used sparingly against Congress.
When the Supreme Court invalidates federal laws, Congress may redraft them, eliminating the provisions found objectionable by the Court. Or it may initiate an amendment to the Constitution, establishing its right to enact legislation of the type desired. In this way a Supreme Court decision, holding that a tax on income derived from property had to be apportioned among the states, led to the enactment of the 16th Amendment (1913), giving Congress the power to levy "Taxes on incomes, from whatever source derived, without apportionment among the several States ... "It is also within the power of Congress to initiate a constitutional amendment depriving the Supreme Court of its power to invalidate legislation. Although an amendment of this type has been suggested as a means of increasing the power of Congress, none has been adopted.
Political Parties and Congress
Although not contemplated by the Founding Fathers and not provided for in the Constitution, political parties are important in the functioning of Congress. Party programs, policies, and interests influence the votes of members of Congress. All committees in both houses are composed of members of the majority and minority parties in proportion to their strength. Members of the majority party chair the committees. A majority and a minority leader in each house are chosen by caucuses of their respective fellow party members. As political leaders they are not, in that capacity, officers of Congress, but are influential in scheduling and shaping legislation and in determining the attitude of Congress toward the executive branch of the government.
The Constitution leaves to the states the right to fix "the times, places and manner of holding elections for Senators and Representatives. "Each house, however, is the judge of the qualifications and fitness of its members and may punish and expel them for cause. Members of Congress cannot be sued for utterances made in Congress, and, while attending congressional sessions, senators and representatives also enjoy immunity from arrest, except in cases involving "treason, felony and breach of the peace." Their remuneration is fixed by their respective house. Members of Congress are provided with offices and secretarial and clerical assistance; those who serve for six years or more are eligible to retire on annuity at the age of 62.
Congressional Sessions
The term of a Congress extends from each odd-numbered year to the next odd-numbered year; the 1st Congress convened in 1789. The 20th Amendment, in effect since 1933, provides for an annual meeting of Congress, called a session, commencing on January 3, unless Congress itself designates another date. By terms of the Legislative Reorganization Act of 1946 (Public Law 601), Congress must adjourn its annual meeting sine die by July 31 at the latest, except in time of war or other national emergency, when the meeting may be extended by the Congress itself. When Congress is not in session, the president is empowered by the Constitution, on "extraordinary occasions," to call special sessions of Congress or of either house. Thus, at least two, and sometimes more, sessions are held in each Congress.
The houses of Congress meet separately in the Capitol, Washington, DC, but convene in joint session to receive important communications from the president or, occasionally, to listen to an address by a visiting foreign dignitary. Most sessions...