In the US government who can serve for life?

In the U.S. government, Supreme Court justices can serve for life, as they are appointed for life terms unless they resign, retire, or are removed through impeachment. This provision is intended to ensure judicial independence by insulating justices from political pressures. Additionally, some federal judges also have life tenure under similar conditions. However, members of Congress and the President do not serve for life; their terms are limited by elections.