Inherent powers are powers that a particular branch of government holds because they are necessary to perform its duties. The three branches of government under the US Constitution are the Legislative Branch (Congress), the Executive Branch (headed by the President), and the Judicial Branch (the Supreme Court and the lower courts).
A US naval vessel is attacked in the Pacific Ocean. Without a declaration of war from Congress, the President orders a retaliatory strike. The President argues that they can order this action without a declaration of war because, as Commander-in-Chief of the Armed Forces, the President has the inherent power to make individual military decisions without congressional approval. On the other hand, if the President were to declare war, that would fall outside their inherent powers because the Constitution reserves to Congress the authority to declare war.
One core presidential power is the power to veto legislation. The president who vetoed the most bills was Franklin D. Roosevelt. FDR was the only president to serve more than two terms, so it makes sense that he vetoed the most bills. Out of all presidents who served no more than two terms, the president who vetoed the most laws was Grover Cleveland, who often used his veto power to curtail government spending. By contrast, the only two-term president who vetoed no laws was Thomas Jefferson. William Henry Harrison, America’s shortest-serving president, vetoed no bills during the one month when he was president.
A core power of Congress is the power to declare war. The first time Congress declared war was in 1812, when Congress declared war on the United Kingdom. The most recent time Congress declared war was in 1941, when Congress declared war on Japan following the attack on Pearl Harbor. Although the United States has been involved in multiple wars since then, they didn’t involve congressional declarations of war. To this day, legal scholars debate whether or not these military actions were constitutional without a congressional declaration of war.
A core power of the Supreme Court is judicial review, which allows the court to strike down legislation or executive actions as unconstitutional. In 1952, the Supreme Court ruled that President Harry S. Truman’s decision to take control of the nation’s steel mills was unconstitutional. Recognizing the Supreme Court as America’s highest legal authority, Truman complied with the ruling and returned the steel mills back to their original owners.
For more detailed information, see our related Constitutional Law terms: