Why does gender schema encourages stereotyping

Specifically, having strong gender schemata provides a filter through which we process incoming stimuli in the environment. This leads to an easier ability to assimilate information that is stereotype congruent, hence further solidifying the existence of gender stereotypes.

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.