The Oath of Office is usually administered to the speaker by the oldest member in point of service,—called "the Father of the House,"—after which the speaker calls the other members to the front—usually by state delegations—and administers the oath to them. Newly elected senators are escorted to the Vice President's desk, usually each by his state colleague, and are sworn in individually.

Adoption of the Rules.—After the administering of the oaths of office, the house adopts the rules of the preceding Congress for regulating its procedure pending the adoption of new rules. Usually this is a perfunctory performance and is carried through without opposition. At the opening of the sixty-first Congress, however, strong opposition was manifested toward the old rules and they were not readopted until important amendments had been made in them.

After the adoption of the rules each house appoints a committee to notify the other of its readiness for business, and the two then appoint a joint committee to inform the President of the United States that Congress is ready to receive any communication that he may be pleased to make. The message of the President is then laid before each house and the business of Congress proceeds.

Quorum.—The Constitution provides that a majority of each house shall constitute a quorum for the transaction of business, but that a smaller number may compel the attendance of absent members in such manner and under such penalties as each house may prescribe.

Old Method of Counting a Quorum.—For a long time the method of ascertaining whether a quorum was present was by a roll call. If the roll call failed to show the presence of a majority, the speaker ruled that no quorum was present, even though every member of the house was actually in his seat. In the course of time this rule came to be frequently abused by the minority for the purpose of preventing consideration of measures to which it was opposed. Thus in January, 1890, when the Republicans had only a slight majority in the house of representatives, the Democrats were able, owing to the absence of a few Republican members, to break a quorum and prevent consideration of important measures, by refusing to answer to the roll call. On a notable occasion in January, 1890, the roll call showed 161 yeas, 2 nays, and not voting 165, the 165 who refused to vote being Democrats who were opposed to the taking up of a certain measure which the Republicans desired to pass. Under the rules the roll call did not show a quorum present, though more than two thirds of the members were actually in their seats.

The New Method.—The Republican majority therefore adopted a new rule, that members who were actually in their seats were to be counted by the speaker as present, no matter whether they voted or not. The action of Speaker Reed in enforcing this rule raised a storm of protest by the minority, but he courageously stood his ground. The new rule was readopted by the next Congress though the Democrats were then in the majority, and it has been continued ever since with the exception of one or two Congresses when the old rule was reverted to. Much of the business of Congress is really done, however, when there is no quorum present, this being permissible so long as the point of "no quorum" is not raised by any member.

Open Sessions.—The ordinary sessions of both houses are open to the public, though until 1794 the senate held its sessions in secret. When the senate goes into executive session, as it may do when it is considering nominations of the President to public office or is engaged in considering treaties, the galleries are cleared, the doors closed, and its deliberations are conducted in secret, though, the results of its transactions usually leak out in some way.

Seating of Members.—Until 1913 each member of each house was provided with a seat and a desk, but in that year the desks were removed from the house of representatives in order to bring the members nearer together. Prior to that date, seats were assigned to members by lot at the opening of Congress, but the leader of the minority party and one or two other members of long service were usually allowed to select their seats without resort to the lot. The Democrats are seated on the right of the speaker and the Republicans on the left. In the senate, each seat as it becomes vacant is assigned to the member who first makes application for it to the presiding officer. The house chamber is so large that members in the rear seats are at a disadvantage, and speech making is carried on with difficulty. In 1913, however, this inconvenience was diminished by a reduction in the size of the hall by about one third of the floor space.[32] The senate chamber is less spacious, and debate can be conducted with much greater satisfaction and effectiveness. It would be a great advantage if the number of representatives could be reduced to 250 or 300 so as to make the house less unwieldy, but there is little probability that such a reform will ever be effected. If smaller in size, the house could transact its business with more dispatch, give more careful consideration to bills, and allow members a greater opportunity for discussion.

Committees.—Obviously an assembly of more than 400 members cannot legislate effectively as a whole; its work must be done largely by committees. To some committee every measure and every petition is referred, as are also the various recommendations of the President. In the sixty-seventh Congress (1921-1923) there were thirty-four standing committees in the senate and sixty in the house. Usually there are also several select committees, and occasionally a few joint committees. In the senate, the committees vary in size from three to sixteen members; in the house from three to thirty-five.

The most important committees in the senate are those on appropriations, commerce, finance, foreign relations, interstate commerce, judiciary, military affairs, naval affairs, and public expenditures. The least important are those on disposition of useless papers, University of the United States, and Revolutionary claims, since there is little or no business referred to them. The most important committees in the house are those on ways and means, appropriations, banking and currency, public expenditures, foreign affairs, interstate and foreign commerce, judiciary, military affairs, naval affairs, public buildings and grounds, rivers and harbors, and rules (twelve members now, formerly five). The least important is that on the disposition of useless papers.[33]