Final answer:
Federal judges serve for life, ensuring their independence from politics and protecting them from undue influence.
Step-by-step explanation:
The life term of federal judges refers to the duration of their service on the bench. According to Article III of the U.S. Constitution, federal judges serve during good behavior, which effectively means they have lifetime tenure.
This provision was included by the framers of the Constitution to ensure the independence of the judiciary and protect judges from political pressure or influence.