CBC.caObama leadership on BP spill faces testing weekReutersWASHINGTON/LONDON, June 14 (Reuters) - Barack Obama's leadership of the Gulf of Mexico oil spill faces key tests this week as the US president gives his first national address on the disaster and meets top BP (BP.L) (BP. ...Obama plans fourth tour of Gulf oil spillThe Associated PressBP Deploys Deepsea Sensors to Better Measure SpillABC NewsFROM WIRE REPORTS The New York Times, The Associated PressDallas Morning NewsLos Angeles Times -New York Times -Wall Street Journalall 10,064 news articles »