Which amendment imposes a two-term limit on the presidency?

The two-term limit on the presidency is established by Amendment 22 to the United States Constitution. This amendment was ratified in 1951 in response to Franklin D. Roosevelt's four terms in office, which raised concerns about the concentration of power in the executive branch. Amendment 22 specifically states that no person can be elected to the office of the President more than twice, ensuring a limitation that promotes the principle of rotation in office and the democratic ideal of preventing any single individual from holding too much power over an extended period. This amendment reflects the framers' intention to create a system of checks and balances within the government, and it emphasizes the importance of democratic leadership transitions in a constitutional republic.

The other amendments listed do not pertain to presidential term limits. Amendment 24 abolished poll taxes in federal elections, Amendment 26 granted the right to vote to those who are 18 years of age and older, and Amendment 25 deals with presidential succession and disability. Thus, Amendment 22 is the one clearly focused on regulating the number of terms a president may serve.