Canadian Press: A panel violated federal laws when it recommended regulatory approval for a $7-billion oilsands project on the basis of unproven cleanup plans, a lawyer for an environmental coalition argued Tuesday. The panel assessing the impacts of Imperial Oil’s (TSX:IMO) Kearl proposal admitted it was unsure about the effectiveness of the plans to deal with mine tailings. But it still decided to advise the federal government that the project posed no significant effects that couldn’t be …