Final answer:
The power to declare war is NOT an expressed power of the president under Article II of the U.S. Constitution.
Step-by-step explanation:
Under Article II of the U.S. Constitution, the power to declare war is NOT an expressed power of the president. This power is actually given to Congress, as stated in the Constitution. While other options a, c, d, and e are expressed powers of the president, option b - the power to declare war - is not.