Overview: 2011/12/13 Headlines: Canada Withdraws from Kyoto Climate Change Treaty; Human Rights Advocate Moncef Marzouki Sworn in as President of Tunisia; Over 1,000 Occupy Protesters Join to Shut Down Major Western Ports; NYPD Officers Arrest Media in Effort to Break Up Occupy Solidarity Demonstration; Houston Police Arrest 20 Occupy Protesters; Police in Riot Gear Clear Occupy Baltimore Encampment; Anti-Nuclear Activists Invoke Occupy Tactics in Vermont Demonstration; 11 Arrested; Bill Allowing for Indefinite Military Detention of Americans Passes House, Senate; Obama, Maliki Agree: Troop Pullout Will Not End U.S. Involvement in Iraq; U.N. Human Rights Chief: More than 5,000 Killed in Syrian Crackdown; Supreme Court Will Hear Lawsuit Challenging Controversial Arizona Immigration Law; Number of Immigrants Arrested on U.S.-Mexico Border Plummets to Lowest Level in Decades; Report: Wealthy Americans Would Benefit Most from Gingrich Tax Plan; Goldman Sachs Forced to Cancel Ivy League Recruiting Visits Following Occupy Wall Street Protests; Physicians Call on Obama to Investigate Massacre of 2,000 Taliban Prisoners; Study Confirm Link Between Mountaintop Coal Removal Mining, Degradation of Water Quality; Medical Device Maker Agrees to Pay $23.5 Million to Settle Kickback Allegations