3 U.S. Code § 20 is about Resignation or refusal of office. It is under Chapter 1 (Presidential Elections and Vacancies) of Title 3 (The President) of the Code.
The only evidence of a refusal to accept, or of a resignation of the office of President or Vice President, shall be an instrument in writing, declaring the same, and subscribed by the person refusing to accept or resigning, as the case may be, and delivered into the office of the Secretary of State.
3 U.S. Code § 21 3 U.S. Code § 21 is about Definitions. It is under Chapter 1 (Presidential Elections and Vacancies) of Title 3 (The President) of the
3 U.S. Code § 19 3 U.S. Code § 19 is about Vacancy in offices of both President and Vice President; officers eligible to act. It is under Chapter
3 U.S. Code § 18 3 U.S. Code § 18 is about Same; parliamentary procedure at joint session. It is under Chapter 1 (Presidential Elections and Vacancies) of Title
3 U.S. Code § 17 3 U.S. Code § 17 is about Same; limit of debate in each House. It is under Chapter 1 (Presidential Elections and Vacancies) of
