The appointment of a judge to the Supreme Court, the Federal Court of Appeal, the Federal Court, the Tax Court, or appellate and superior courts for the provinces, must be a recommendation of the prime minister to the Governor General. This means that the prime minister can reject the appointment of a judge to these benches. (The consent of the Governor General is needed to appoint a judge to any of the above benches, but there are almost no circumstances under which the Queen's representative would refuse the advice of the prime minister for such an appointment.)
The appointment of a judge to provincial inferior courts must be a recommendation of the provincial premier to the Lieutenant Governor of the province. This means that the premier can reject the appointment of a judge to these benches. (Again, although the consent of the Lieutenant Governor is needed, the Queen's provincial representatives rarely deviate from the advice of premiers.)
Once the President has made a nomination to a post, the Senate is the only body which can refuse to confirm the nomination. However, the President can withdraw his nomination before confirmation.
The Senate. According to the Nomination Clause in Article II, Section 2 of the US Constitution, the President's appointments (nominations) are made with the "advice and consent" of the Senate. If 51% or more of the Senators vote in favor of the nomination, the appointment is confirmed; if 51% or more vote against the nomination, the appointment is rejected.
The Senate can also reject candidates in more subtle ways, such as by referring the nomination to committee, then refusing to act on it, by telling the President there is too much opposition to the nomination and encouraging him (or her) to withdraw the name from consideration; or by filibustering to prevent a vote in the full Senate.
The United States Senate can refuse to confirm presidential appointments. Supreme Court justices are one example of people who are appointed by the president.
The President's nomination for Cabinet Secretary may be rejected by a majority vote of the U.S. Senate.
The US Senate must confirm the President's cabinet appointment before they take effect. The Senate has been known to reject the president's choice.
the U.S. Senate
The senate must confirm all major appointments of the President before they can take effect. This includes the cabinet secretaries, ambassadors and federal judges.
Cabinet Secretaries
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The Cabinet secretaries head the departments of which they are the secretaries.
The Cabinet secretaries head the departments of which they are the secretaries.
chief justice
labor
A Cabinet
The president appoints the secretaries, and the senate approves them.
Parliamentary Secretaries
cabinet
The Executive Branch