Twenty-second Amendment to the United States Constitution
As worded, the primary focus of the 22nd Amendment is on limiting individuals twice elected to the presidency from being elected again. Due to this, several issues could be raised regarding the amendment's meaning and application, especially in relation to the 12th Amendment, ratified in 1804, which states, "But no person constitutionally ineligible to the office of President shall be eligible to that of Vice-President of the United States". While it is clear that under the 12th Amendment the original constitutional qualifications of age, citizenship, and residency apply to both the president and vice president, it is unclear whether someone who is ineligible to be elected president could be elected vice president. Because of this apparent ambiguity, there may be a loophole in the 22nd Amendment whereby a two-term former-president could be elected vice president and then succeed to the presidency as a result of the incumbent's death, resignation, or removal from office (or even succeed to the presidency from some other stated office in the presidential line of succession).
George Allen (American politician)
Barred by term limits from seeking reelection to a second term in 1997, he worked in the private sector until the 2000 election in which he ran for the United States Senate, defeating two-term Democratic incumbent Chuck Robb. Allen ran for reelection in the 2006 election, but after a close and controversial race, he was defeated by Democratic former U.S. Secretary of the Navy Jim Webb. When Webb decided to retire, Allen ran for his old seat again in the 2012 election but was defeated again, this time by Democratic former Governor Tim Kaine. Allen now serves on the Reagan Ranch Board of Governors of Young America's Foundation, where he is a Reagan Ranch Presidential Scholar.