The president is head of the executive branch, which has three basic duties: 1) Implement the laws that congress passes 2) Represent the US internationally 3

The president is head of the executive branch, which has three basic duties: 1) Implement the laws that congress passes 2) Represent the US internationally 3) Be the head of the military in times of war Trump's responsibilities explicitly encompass foreign policy, with some important exceptions. Namely, the president cannot declare war or enter into treaties. Those powers are for congress. The president also cannot create laws or set budgets.