All eight of the Cabinet Members who were also U. S. Presidents served in the Cabinet before their presidencies. However, Vice President Henry A. Wallace served as Commerce Secretary for a short time after his vice presidency.
Jefferson Davis, President of the Confederate States was Sec. of War under Pierce
Presidential Cabinet members are appointed by the president with approval of the US Senate.
Yes, as a rule.
senate
the presidents cabinet
TRUE
Presidential Cabinet members are appointed by the president with approval of the US Senate.
The President chooses the cabinet members and his selection must be confirmed by the US Senate before they take effect.
The speaker of the house. Then if he or she dies the members of the presidents cabinet in order of when the cabinet position was created.
They serve at the pleasure of the President. He can dismiss them at any time. Cabinet members do not have term limits
The separation of powers.
The President's nominations for cabinet posts are vetted by the US Senate which has the power to reject them if they wish.
This is a leading question -- I have not read anything about conflicts in the President's cabinet. In past years, cabinet members have had disagreements for various reasons. Cabinets members used to meet more often so there was more opportunity for personality conflicts.