The news slips reports on the events leading up to the passing of the War Powers Act, and the further implication of this law. The legislative branch is given more power to limit the president's control to send troops into war.
This clip describes the separation of powers in the United States government. The three branches of the government are the Executive branch, the Legislative branch, and the Judicial branch. Each branch performs checks on the other to ensure that no one branch becomes more powerful than the other two.