Twenty-second Amendment to the United States Constitution
Some argue that the 22nd Amendment and 12th Amendment bar any two-term president from later serving as vice president as well as from succeeding to the presidency from any point in the presidential line of succession. Others contend that the original intent of the 12th Amendment concerns qualification for "service" (age, residence, and citizenship), while the 22nd Amendment, concerns qualifications for "election", and thus (strictly applying the text) a former two-term president is still eligible to "serve" as vice president (neither amendment restricts the number of times an individual can be elected to the vice presidency), and then succeed to the presidency to serve out the balance of the term (though prohibited from running for election to an additional term).
Presidency
For former presidents who had entered office before January 1, 1997 are entitled to lifetime protection carried out by The Secret Service. Protection of the president's spouse is also granted until death or in the case of remarriage. In 1984 the ability to decline Secret Service protection was enacted by legislation enacted. The costs of protecting former presidents and dependents are not publicized by the Secret Service due to security reasoning. Former presidents who entered office after January 1, 1997 are limited to ten years of protection for themselves and their spouses. A spouse’s protection ends upon divorce, remarriage, or the former president’s death.
According to the 25th Amendment to the United States Constitution, the death of a president still active in office is automatically entitles his or hers spouse to one year of protective services. However, authorization of protection can be issued by the Secretary of Homeland Security. Children of former presidents, up to the age of 16, are guaranteed the same services as long as the time period does not surpass 10 years. In addition to direct protection, the Secret Service was entitled to investigate any potential threats against the former presidents and their dependents by the Presidential Threat Protection Act passed in 2000. The act passed by the 106th Congress can be deciphered as so: To amend section 879 of title 18, United States Code, to provide clearer coverage over threats against former presidents and members of their families, and for other purposes.