What does the Executive Branch do?

The Executive Branch is primarily responsible for enforcing laws. This branch is headed by the President at the federal level and includes various departments and agencies that implement and administer laws passed by the legislative branch. The enforcement of laws involves ensuring compliance with legal statutes, executing policies, and managing public administration. The President also has the authority to issue executive orders, which have the force of law, and plays a key role in national defense and foreign affairs.

In contrast, the other functions listed in the question are associated with different branches of government; for instance, writing laws is the responsibility of the legislative branch, interpreting laws falls to the judicial branch, and amending laws is a process that typically involves both the legislative branch and the states. Thus, the Executive Branch's primary function is accurately captured by its role in enforcing existing laws.