Final answer:
The reason Truman, Eisenhower, and Reagan called for the repeal of the 22nd amendment is not clear from the provided information, but it could be due to the limitation it places on presidential terms and the potential impact on their ability to govern effectively.
Step-by-step explanation:
The reason Truman, Eisenhower, and Reagan called for the repeal of the 22nd amendment is not clear from the provided information. However, it is worth noting that the 22nd amendment limits the president to two terms in office, and some presidents may have felt that this restriction hindered their ability to effectively govern in their second term.
Additionally, presidents who serve two terms often become "lame ducks" as attention turns toward their successors, which may have been another reason for their desire to repeal the amendment.