The legislative branch (US Congress) more specifically the US Senate, must confirm all appointments to Federal judgeships, and ratify all international treaties.
The Judicial Branch of Government appoints Federal judges.
Congress approves, the president appoints.
The Executive branch appoints all federal judges, with the Senate's approval.
The Executive Branch.
Within the US Federal Government, the executive branch appoints the various judges in the Federal justice system. Supreme Court judges and Federal district judges are appointed by the US President and must be approved by a majority of the US Senate.
The Executive Branch. The President appoints, subject to approval/ confirmation by the Senate.
The President (Executive Branch) appoints judges and justices of the Judicial Branch with the advice and consent (approval) of the Senate (Legislative Branch). Both branches must participate in order to complete an appointment.
The Congress.
Adams appoints judges
The President (head of the executive branch) appoints, with Senate confirmation, the higher ranking federal judges. There is also a group of federal judges that are hired by the judiciary system.
Executive
The president's power to nominate federal judges is a check on the judicial branch by the executive branch.