Legal news Roundup - February 28, 2012Compiled By Katia Caporiccio CanadaVia derailment passengers seek to launch class action suit, Ottawa CitizenWinnipeg man admits to killing in self-defence in alleged homosexual incident, CalgaryHeraldB.C. hit-and-run driver gets two years for killing motorcyclist, TheProvinceUnited StatesSupreme Court rejects states' appeal on Great Lakes carp, ReutersBank of America trial returns to NY state court, ReutersInternationalNigerian politician admits to corruption in U.K. court, ReutersSpanish judge cleared in Franco probe case, Reuters