In the United States the Congress, or legislative branch confirms federal judicial appointments. It is the Senate as upper house of the Congress that has the Constitutional power to confirm federal judges, and Supreme Court nominees.
he Constitution splits the responsibility for filling high-ranking federal government positions between the executive and legislative branches. The president has the power to appoint people to these positions, but those appointments must be approved by the Senate.
The federal government IS the president, but Congress CAN override a veto with a 2/3 vote. To be clear, it is important for you to understand that the federal government refers to all the offices and support in the national government.
Congress is the federal government and the General Assembly is the state government. Another difference is Congress has the House of Representatives and the General Assembly has the House of Delegates.