For the small group calling for boots on the ground—how can we ask our brave men and women to risk their lives for a country the Iraqis aren’t willing to fight for themselves? Iraqi soldiers are stripping off their uniforms and fleeing this fight. We shouldn’t ask our soldiers to put their uniforms on to take their places.

No matter what the administration is planning, I also insist that it go through Congress. President Obama declared this war over and even asked Congress to rescind its 2002 Authorization for Use of Military Force Against Iraq, something I agreed with. If he or others want a new war or military action, they need a new approval, from Congress, or I will oppose them.

The U.S. spent eight years training the Iraqis and nearly a decade of war has brought us to this point. Those who say it was a mistake to leave are forgetting that Prime Minister Nouri al-Maliki’s government was demanding we leave in 2011.

Those who say we must re-engage in Iraq are also forgetting an important part of the Weinberger Doctrine: “U.S. troops should not be committed to battle without a ‘reasonable assurance’ of the support of U.S. public opinion and Congress.” To attempt to transform Iraq into something more amenable to our interests would likely require another decade of U.S. presence and perhaps another 4,000 American lives—a generational commitment that few Americans would be willing to make.