Answer:
supreme court justices serve for life so their decisions are based only on the laws.
Step-by-step explanation:
The Judges of the Supreme court which is the Apex court in the U.S serve a life term so that a judgment been passed by them cannot be affected based on the votes of the people when they will seek for re election. they are appointed and they can either retire or be removed by the presidency.
The representatives serve for 2 year terms while the senators serve for a 6 year term. and not the other way round. heads of federal agencies like the CIA report directly to the president and not the chief justice.