Final answer:
Cabinet members are typically not chosen from Congress for several reasons, including the desire to reward the president's own party and achieve policy goals. Presidents also aim to create a diverse cabinet that represents different groups. Expertise and experience are valued when selecting cabinet members.
Step-by-step explanation:
There are several reasons why so few cabinet members come from Congress. One reason is that cabinet appointees are typically chosen from the president's own party. This is because selecting fellow partisans rewards the winning coalition and helps achieve policy goals. Another reason is that presidents also try to create a cabinet that represents a diverse group of individuals, including persons of color, women, and members of the other party. Additionally, presidents may prioritize expertise and relevant experience when selecting cabinet members, rather than solely considering political loyalty or ideological similarity.