The primary goal of life tenure is to insulate the officeholder from external pressures.
United States federal judges have life tenure once appointed by the president and confirmed by the Senate.
[3] In some cases, life tenure lasts only until a mandatory retirement age.
For example, Canadian senators are appointed for life, but are forced to retire at 75.
The Pope, as the Bishop of Rome and leader of the worldwide Catholic Church, has life tenure, but other Catholic bishops are required to submit their resignations at age 75.