President Obama yesterday eliminated the most controversial tools employed by his predecessor against terrorism suspects. With the stroke of his pen, he effectively declared an end to the "war on terror," as President George W. Bush had defined it, signaling to the world that the reach of the U.S. government in battling its enemies will not be limitless.

While Obama says he has no plans to diminish counterterrorism operations abroad, the notion that a president can circumvent long-standing U.S. laws simply by declaring war was halted by executive order in the Oval Office.

Key components of the secret structure developed under Bush are being swept away: The military's Guantanamo Bay, Cuba, facility, where the rights of habeas corpus and due process had been denied detainees, will close, and the CIA is now prohibited from maintaining its own overseas prisons. And in a broad swipe at the Bush administration's lawyers, Obama nullified every legal order and opinion on interrogations issued by any lawyer in the executive branch after Sept. 11, 2001.

It was a swift and sudden end to an era that was slowly drawing to a close anyway, as public sentiment grew against perceived abuses of government power.

Boo-yah!