MELISSA BLOCK, HOST:
From NPR News, this is ALL THINGS CONSIDERED. I'm Melissa Block.
ROBERT SIEGEL, HOST:
And I'm Robert Siegel.
Almost all of the federal government's actions against terrorism - from drone strikes to the prison at Guantanamo Bay - are authorized by one law. Congress passed it just after 9/11. Now, President Obama says he wants to revise the law and ultimately repeal it. NPR's Ari Shapiro reports on what the White House has in mind.
ARI SHAPIRO, BYLINE: The Authorization for the Use of Military Force, or the AUMF, is one of the most unusual laws Congress has passed this century. It's less than a page long. The vote was nearly unanimous, and it went from concept to law in exactly one week. It authorizes the president to go after the groups that planned, authorized, committed or aided the 9/11 attacks or any groups or countries that harbored them.
In broad terms, it justified invading Afghanistan, but two presidents have applied it around the world. Karen Greenberg runs the Center on National Security at Fordham Law School.
KAREN GREENBERG: It was vast in the powers that it gave, and it was somewhat vast in its definition of the enemy. However, in many ways, that definition has expanded in the interim years.
SHAPIRO: Presidents Bush and Obama have used AUMF authority to kill terrorists in Somalia, Yemen and other places far from the Afghan battlefield. Now, President Obama says the law needs to change. Last week, at the National Defense University, he explained that after 12 years, the Afghan War is ending, and al-Qaida's core is a shell of its former self.
PRESIDENT BARACK OBAMA: Unless we discipline our thinking, our definitions, our actions, we may be drawn into more wars we don't need to fight, or continue to grant presidents unbound powers more suited for traditional armed conflicts between nation states.
SHAPIRO: Obama promised to work with Congress to refine and ultimately repeal the AUMF's mandate.
OBAMA: And I will not sign laws designed to expand this mandate further.
SHAPIRO: According to a senior White House official, that threat was a specific reaction to lawmakers who've talked about expanding the law. Senator John McCain spoke at a Senate Armed Services Committee hearing earlier this month.
SENATOR JOHN MCCAIN: Wouldn't it be helpful to the Department of Defense and the American people if we updated the AUMF, to make it more explicitly consistent with the realities today, which are dramatically different than they were on that fateful day in New York?
SHAPIRO: See, until now, presidents have interpreted a very vague law to give them very broad powers. McCain wants to make the law less vague and make those broad powers explicit. But the White House is moving in the opposite direction. As a senior White House official put it, the AUMF should apply to al-Qaida. As we defeat al-Qaida, we should ultimately repeal the law.
As other terrorist groups become threats, the White House believes the president should ask Congress for permission to target groups on a case-by-case basis. Ambassador James Jeffrey worries about rolling back the law. He was deputy national security adviser to President George W. Bush.
AMBASSADOR JAMES JEFFREY: This law has served us well for over a decade. Much hangs from it, including the detention capability and the ability to use the U.S. military against clear and present dangers to the United States.
SHAPIRO: That detention piece of the puzzle is key. Guantanamo prison operates under the Authorization for the Use of Military Force, so repealing this law is also part of the White House's effort to close the prison. Many in Congress want to keep the prison open, and that's one reason this will not be easily resolved, says Thomas Kean, who co-chaired the 9/11 Commission.
THOMAS KEAN: I think it'll be a long debate, and it should be.
KEAN: I mean, this is very, very contentious issues. But the one thing you have to have, I think, in the United States, particularly for something lasting as long as this, is a framework of laws. You - we are a nation of laws. You can't just do ad hoc as we have in the past.
SHAPIRO: It's pretty unusual for a president to ask Congress to take away some of his power. But Kate Martin of the Center for National Security Studies says look at it a different way and this situation doesn't seem so strange.
KATE MARTIN: It's not unusual for presidents to end wars, right? And if what we were talking about was ending military operations, that would not look like a president giving up power. It would look like a president ending wars.
SHAPIRO: In fact, the White House wants to change this law authorizing the war on terror at the same time the Afghan War ends in 2014. That gives them a year-and-a-half to wrestle with Congress over the details. Ari Shapiro, NPR News, Washington.