Legal news Roundup - August 2, 2012Compiled By Katia Caporiccio CanadaMountie charged with assaulting officer outside B.C. bar, The Globe and Mail Lawyer John Plater dead at 45, Toronto StarTweeting allowed in B.C. courts for lawyers and media, The ProvinceUnited StatesU.S. appeals court blocks Arizona's ban on late-term abortion, ReutersMississippi court denies Southern Co. interim coal-unit rate hike, ReutersInternationalProminent judge to be Egypt's new justice minister, ReutersBrazil court orders Chevron, Transocean to stop all operations, Reuters