Based on the responsibility of being head of the executive branch, the president must create all new laws for the nation interpret all laws of the nation carry out the laws of the nation create and carry out new laws for the nation

Based on the responsibility of being head of the executive branch, the president must carry out the laws of the nation .

Explanation:

The president as the head of the executive branch must observe, apply and enforce the country´s laws. It´s one of his duties. He can´t exercise a power that his office has not been vested with. The executive branch doesn´t create laws; that´s the role of Congress stipulated by the Constitution. The president can´t also interpret the law; it´s the role of the judiciary, the judicial branch.