Final answer:
If department heads were nationally elected instead of appointed by the president, it would lead to more transparency, accountability, and potentially a stronger separation of powers.
Step-by-step explanation:
If department heads were nationally elected instead of appointed by the president, it would have several implications. Firstly, there would be more transparency and accountability in the selection process as the public would have a direct say in choosing the department heads. This could lead to a more diverse representation in the government as people from different backgrounds and perspectives would have the opportunity to hold these positions. Additionally, national elections for department heads could potentially create a stronger separation of powers, as the heads would not owe their position to the president and would have more autonomy in decision-making.