U.S. support for Keystone pipeline stretches well beyond industry insiders

With four million members in the United States and Canada, Sean McGarvey, president of the building and construction trades unit of the mighty AFL-CIO, is the type of Keystone XL pipeline backer the U.S. president cannot ignore.

Trade unions such as the American Federation of Labour and Congress of Industrial Organizations — the United States’ largest union federation — had a big hand in Barack Obama’s re-election, much like the environmental movement that opposes the Alberta-to-Texas oil sands pipeline.

And their patience with the anti-XL camp is wearing thin.

Read more: http://tinyurl.com/c2wov9d