as may be, into three classes. The seats of the senators of the first class shall be vacated at the expiration of the second year; of the second class at the expiration of the fourth year; and of the third class at the expiration of the sixth year; so that one third may be chosen every second year; and if vacancies happen, by resignation or otherwise, during the recess of the legislature of any State, the executive thereof may make temporary appointment until the next meeting of the legislature, which shall then fill such vacancies.
3. No person shall be a senator who shall not have attained to the age of thirty years, and been nine years a citizen of the United States, and who shall not, when elected, be an inhabitant of that State for which he shall be chosen.
4. The Vice-President of the United States shall be President of the Senate, but shall have no vote, unless they be equally divided.
5. The Senate shall choose their other officers, and also a president pro tempore, in the absence of the vice-president, or when he shall exercise the office of President of the United States.
6. The Senate shall have the sole power to try all impeachments. When sitting for that purpose, they shall be on oath or affirmation. When the President of the United States is tried, the chief justice shall preside; and no person shall be convicted without the concurrence of two thirds of the members present.
7. Judgement, in case of impeachment, shall not extend further than to removal from office, and disqualification to hold and enjoy any office of honour, trust, or profit, under the United States; but the party convicted shall nevertheless be liable and subject to indictment, trial, judgement, and punishment according to law.