All the more important appointments made by the President require the confirmation of the Senate. The President sends to the presiding officer of the Senate the names of his proposed appointees and the Senate thereupon refers them to the appropriate committees for consideration. When the committees make their report the Senate then votes to confirm or reject. A bare majority, not a two-thirds vote, suffices. Rejections take place at times, but the great majority of the President’s nominations are confirmed without delay. The Senate understands that the chief responsibility for selecting federal officers rests with the executive branch of the government and that confirmation should not be refused without good reason. There is, however, a practice known as “senatorial courtesy”, which has frequently led to the rejection of names proposed by the President. According to this custom the Senate will not confirm the appointment of any local officer, such as postmaster or internal revenue officer, unless the person named for the appointment is satisfactory to the senator or senators from the state concerned, provided, of course, that these senators are of the same political party as the President himself. Or, to put it more concretely, if a Republican President nominates as internal revenue officer at Philadelphia someone who is not approved by the Republican Senators from Pennsylvania, the Republican majority in the Senate will not permit the appointment to be confirmed. This unwritten rule of senatorial courtesy has been enforced at some times and not at others. Some presidents have been able to persuade the Senate to disregard it; but in general it is a custom which ties the hands of all presidents to a considerable extent. When the Senate is not in session, the President is free to make appointments at his own discretion. These are known as “recess appointments” and are temporary only. If the Senate, at its next session, fails to confirm them, these recess appointments lapse and the appointees get no pay for the time they may have served. [Sidenote: 3. Ratification of treaties.] All treaties between the United States and other countries must be approved by a two-thirds vote of the Senate before they can go into effect. This gives the Senate an important influence in the control and direction of foreign affairs because the relations between the United States and other countries are fixed, to a considerable extent, by treaties. The whole subject of treaties and foreign relations is so complicated, however, that it may best be reserved for study in a later chapter. [Sidenote: Powers which are jointly exercised with the House.]