Which branch has the power to appoint supreme court justices and other federal judges?

Answer : In the United States, the executive branch—more specifically, the President of the United States—has the authority to nominate justices to the Supreme Court and other federal courts. Judges and justices are proposed by the President and confirmed by the Senate, which is a part of the legislative branch. Until they retire, resign, or are impeached and dismissed from office, judges and justices hold their positions for life after being confirmed.