* BP Oil Slick Reaches La. Shores * U.S. Imposes 3-Week Freeze on New Offshore Drilling Permits * Labor, Civil Rights Groups Urge Arizona Boycott * Senate Defeats Amendment to Break Up Banks * Study: Americans “Bombarded” With Cancer Causes * Pentagon Bans 4 Reporters from Gitmo Trials * Fmr. Guatemalan Soldier Involved in 1982 Massacre Arrested in Florida * Greek Lawmakers Approve New Austerity Measures * Burmese Opposition Party Dissolves * 2 Palestinian Civil Rights Activists Jailed * Biden Urges EU to Provide Passenger, Financial Data * Filmmaker Ordered to Hand Ecuador Footage to Chevron * Ohio Police Raid Home of Foreclosure Activist