Which job is appointed by the president and is the top position in the State Department?

Explanation:

The Secretary of State, appointed by the President with the advice and consent of the Senate, is the President's chief foreign affairs adviser. The Secretary carries out the President's foreign policies through the State Department and the Foreign Service of the United States.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.

whose power in the senate is equal to the power of the speaker of the house?