In a Senate Foreign Relations Committee meeting recently, we debated repealing the 2002 Authorization for the Iraq War. The Iraq War ended long ago. You'd think it would be unanimously agreed to end a war that's already over.    

But, if we stop with just repealing the Iraq War authorization, I fear nothing will change.

We need to take the additional step of also repealing the Authorization for the war in Afghanistan. The 2001 authorization to bring the 9/11 terrorists to justice was warranted, but like the Iraq War, the Afghan War has long ago ended — yet its authorization remains on the books.

Deciding when and where to go to war is Congress's job. The president has authority to execute the war, but not to initiate it. James Madison wrote that the executive branch was the most prone to go to war and, therefore, the Constitution vested that power in the legislature.

There is wisdom in Madison's words. Presidents of both parties abused the 9/11 authorization to take us to war in Iraq, Syria, Yemen, Somalia, Libya, and Niger, among others.