<P> In 1968 , as a result of Robert F. Kennedy 's assassination , Congress authorized protection of major presidential and vice presidential candidates and nominees . In 1965 and 1968 , Congress also authorized lifetime protection of the spouses of deceased presidents unless they remarry and of the children of former presidents until age 16 . </P>
<P> In 1968 , as a result of Robert F. Kennedy 's assassination , Congress authorized protection of major presidential and vice presidential candidates and nominees . In 1965 and 1968 , Congress also authorized lifetime protection of the spouses of deceased presidents unless they remarry and of the children of former presidents until age 16 . </P>
when did the secret service start protecting presidential candidates
when did the secret service start protecting presidential candidates
In 1968
In 1968