Which of the following is NOT a power of Congress?

The correct answer is that enforcing laws is not a power specifically granted to Congress. While Congress has the ability to create and legislate laws, the enforcement of these laws falls under the purview of the executive branch. The executive branch, led by the President, is responsible for ensuring that the laws passed by Congress are implemented and followed.

In contrast, Congress does possess the power to tax, declare war, and print money, all of which are enumerated in the Constitution. Taxing is a fundamental power for generating revenue for the federal government. Declaring war allows Congress to make decisions regarding military action, ensuring checks and balances between the legislative and executive branches. Printing money is essential for managing the nation's currency and financial system, which Congress oversees through its control of the Treasury and the Federal Reserve.

This distinction helps illustrate the separation of powers that is foundational to the U.S. government, where each branch has its own distinct responsibilities and authorities.