2. The United States Congress passed the War Powers Act on November 7, 1973, overriding an earlier veto by President Richard M. Nixon, who called it an
"unconstitutional and dangerous" check on his duties as commander-in-chief of
the military. The War Powers Act, created in the wake of the Korean War and
during the controversial Vietnam War, stipulates (requires) that the president has
to consult with Congress when deploying American troops. This is an example of
which constitutional principle?