A job of the legislative branch (senate).
In the United States, the President appoints cabinet members. These appointments require confirmation by the Senate, which reviews the qualifications of the nominees. Cabinet members typically lead federal departments and advise the President on various policy areas.
senate holds confirmation hearings on the presidents nominees for cabinet posts. the nominee appears before the senate that oversees the department to answer questions about his/her background and views
senate confirmation of cabinet members
The president selects the nominees for his cabinet, including the secretary of defense.
It is fairly rare but it happens. Usually the President finds out in advance that a candidate will have difficulties being confirmed and withdraws the name.(Supreme court nominees are much more likely to be rejected than are cabinet nominees.)
The Senate has the 'confirmation power', they confirm or deny all of the presidents appointments (cabinet, judicial, ambassador). The senate's confirmation power the senate shares with the president the responsibility for filling many high-level government positions.
Congress can block a president's nominations primarily through the Senate's confirmation process. The Senate has the authority to approve or reject presidential nominees for positions such as federal judges, cabinet members, and ambassadors. If the Senate refuses to hold a confirmation vote, or if it votes against the nominee, the president's nomination can effectively be blocked. Additionally, the Senate can employ procedural tactics, such as filibustering, to delay or prevent a vote on a nomination.
The president has the power to nominate or appoint judges, ambassadors, cabinet members and other high ranking officials., subject to approval or confirmation by the US Senate.
The cabinet positions are established by the US Congress.
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cabinet
The senate then holds confirmation hearings on the president's nominees for cabinet posts. The nominee to head each department appears before the Senate committee that oversees the department to answer questions about his or her background or views.