Some US officials raised greenhouse gas concerns as increasing amounts of Alberta’s heavy crude oil move by rail while approval of the Keystone XL pipeline’s cross-border permit continues to be delayed, Premier Allison Redford said after concluding her fifth Washington visit to lobby for the project. “A lot of that product is being transported by rail at the moment, and that is something that is receiving quite a bit of attention in the United States, partly because we know that transportation by rail leads to higher greenhouse gas emissions than a pipeline would,” The Financial Post reported Redford as saying. The premier met with officials at the US Department of State , which is expected to conclude its environmental impact statement early in 2014 on TransCanada Corp.’s revised application for a cross-border permit, as well as US Senate and House leaders. The proposed 1,179-mile pipeline would move diluted bitumen […]