They did nothing, just like you said.
When al Qaida set up an immense terrorist training camp in Afghanistan that operated for over a decade, they did nothing.
When al Qaida set up a world-wide network that funded and aided terror around the world, headquartered in Afghanistan, they did nothing.
When al Qaida bombed the USS Cole and American embassies in Africa, they did nothing.
When al Qaida killed 3,000 American citizens in a terrorist attack, they did nothing.
And when the United States requested the extradition of the leader of al Qaida... they did nothing.