Postmedia: As the decision on the Keystone XL pipeline nears, Canadian governments have launched an intense if not desperate lobbying campaign in the United States designed to persuade influential American politicians and industrial leaders that the pipeline is vital for U.S. security and economic interests and is also an environmentally responsible energy source.
The goal is to counter the rising influence of environmental groups such as the prominent Sierra Club and 350.org, whose leaders have lobbied...