5/26/11: Obama signed four-year extension of the Patriot Act

5/2/11: US forces killed Osama Bin Laden in a firefight in Pakistan

4/4/11: Holder announced 9/11 conspirators to face military trials

1/9/11: Obama signed bill barring transfer of Guantanamo detainees to US for trial

12/22/10: Congress approved bill preventing US trial of Guantanamo detainees

8/16/10: US Senator introduced Guantanamo habeas corpus bill

6/21/10: Supreme Court upheld law criminalizing material support for terror organizations against First Amendment challenge

11/13/09: Holder announced federal trials for accused 9/11 conspirators

11/06/09: US Senate defeated proposal to prevent federal prosecution of 9/11 suspects

12/10/09: Ninth Circuit rejected Mayfield Patriot Act challenge for lack of standing

10/29/09: Obama signed bill allowing transfer of Guantanamo detainees to US for trial

9/10/09: ICC prosecutor began investigating NATO troops in Afghanistan

3/13/09: DOJ dropped "enemy combatant" classification

1/22/09: Obama ordered closure of Guantanamo Bay within one year

1/21/09: Obama administration asked for continuance in Guantanamo proceedings

10/28/08: DC court ruled on meaning of "enemy combatant"

10/20/08: Prosecutors sought extended sentence for Guantanamo detainee Hamdan

6/12/08: Supreme Court ruled Guantanamo detainees have habeas corpus rights

12/10/07: Ninth Circuit struck down portions of material support ban of Patriot Act for vagueness

9/26/07: Federal judge ruled Patriot Act search and surveillance provisions unconstitutional

3/27/07: Federal judge dismissed Rumsfeld torture lawsuit

3/9/07: DOJ admitted FBI acted unconstitutionally in use of National Security Letters

11/14/06: War crimes complaints filed against Rumsfeld in Germany

6/29/06: Supreme Court ruled Guantanamo military commissions unconstitutional

5/23/06: Second Circuit remanded ACLU National Security Letter case after Patriot Act amendments

3/9/06: Bush signed Patriot Act renewal, extending some provisions and making others permanent

12/31/05: Bush signed Patriot Act extension

9/9/05: Federal judge ruled in favor of ACLU in National Security Letter case

8/25/05: ACLU sued over Patriot Act National Security Letter sent to Connecticut library

7/29/05: Federal judge ruled Patriot Act material support ban too vague in Humanitarian Law Project v. Ashcroft

3/1/05: ACLU filed suit against Rumsfeld over torture allegations

11/8/04: Federal judge ruled Guantanamo proceedings unlawful

9/29/04: Federal judge ruled section of Patriot Act allowing authorities to demand financial records in terror investigations unconstitutional

1/11/02: First detainees arrived at Guantanamo Bay

10/7/01: US-led military action began against Taliban government of Afghanistan

9/14/01: Congress passed joint resolution authorizing military force against 9/11 attackers

9/11/01: World Trade Center destroyed, Pentagon damaged and 3,000 killed in terror attacks