What branch of government enforces the law?

The Executive Branch enforces the law.

This seems to be a source of confusion for a lot of people. The three branches of government have complementary functions:
  • The Executive Branch (President) enforces or carries out the laws

  • The Legislative Branch (Congress: The Senate and House of Representatives) makes the laws

  • The Judicial Branch (Federal Courts) interprets and applies the laws and makes sure they're constitutional.