Answer:
U.S. Supreme Court
House of Lords
Step-by-step explanation:
The House of Lords is the second chamber of the UK Parliament. The members of this chamber are appointed for life by the monarch on the advice of the Prime Minister or on the advice of the House of Lords Appointments Commission. The oldest sitting Member of the House of Lords is a man called Lord Christopher that was born in 1925, and the average age of members is 70.
Similarly, the justices of the U.S. Supreme Court, the highest court of the nation, are appointed for life by the President with the advice and consent of the Senate. However, the U.S. Constitution says nothing about this lifetime appointment, Section 1 of Article simply states that federal judges shall hold their offices during "good behavior."