Tillerson recuses himself from Keystone XL decision

US Secretary of State Rex Tillerson, a former oil executive, recused himself Thursday from any role in approving the Keystone XL pipeline between Canada's tar sands and US refineries.President Donald Trump has signalled that he will green light the project, which his predecessor Barack Obama had put on hold after a report overseen by the State Department endorsed environmental concerns.After Trump promised during his successful presidential campaign that he would approve the 1,180-mile (1,900-ki