2010/05/27 Headlines: BP Begins "Top Kill" Attempt to Plug Oil Leak; Expert: Continued Leak Would Mark "Disaster Unseen by Humanity"; Admin Suspends Arctic Drilling, New Oil Leases; Dems Reduce Jobless Benefits Package; Admin, Dems Prep Education Aid as 100,000 Teachers Face Layoffs; Police Chiefs: Arizona Anti-Immigrant Law Increases Crime; 5 Protesters Arrested at Chevron Annual Meeting; Aid Flotilla Approaching Gaza; Israel Vows to Block Ships; Berenson Release Expected Today; Peruvian Indigenous Leader Arrested Following Return from Asylum