Final answer:
The judicial branch interprets U.S. laws, oversees the guarding of the Constitution, and safeguards individual rights through judicial review while maintaining a balanced separation of powers within the federal government.
Step-by-step explanation:
The branch of the federal government responsible for interpreting the laws of the United States is the judicial branch. This branch is comprised of the federal court system, including the Supreme Court at its apex, which has the final say on the interpretation of federal laws, including their constitutionality. It plays a crucial role in guarding the Constitution and protecting individual rights through the power of judicial review. The separation of powers is a fundamental principle in the United States government, intended to prevent any one branch from becoming overly dominant.