Reuters: Pressure for President Barack Obama to approve the Keystone XL pipeline increased on Friday after a State Department report played down the impact it would have on climate change, irking environmentalists and delighting proponents of the project. The agency made no recommendation in its report on whether Obama should grant or deny an application by TransCanada Corp to build the $5.4 billion line, which would transport crude from Alberta's oil sands to U.S. refineries. But the State Department said...