Another story about the frustrated Left; another reason why "turnout" will be a critical problem for the Dems in 2016.

The main union for construction workers is accusing President Obama of throwing them “under the bus” by rejecting the Keystone XL oil pipeline.

The Laborers’ International Union of North America (LIUNA) is one of the few labor unions that broke with the majority of Democrats and supported the project, which Obama rejected Friday after a seven-year review.

“We are dismayed and disgusted that the President has once again thrown the members of LIUNA, and other hard-working, blue-collar workers under the bus of his vaunted ‘legacy,’ while doing little or nothing to make a real difference in global climate change,” Terry O’Sullivan, the union’s general president, said in a statement. “His actions are shameful.”

The group’s statement cited a State Department report that Keystone could reduce greenhouse gas emissions when compared with oil transportation by rail.

“But facts apparently mean as little to the president as the construction jobs he repeatedly derided as insignificant because they are ‘temporary,’ ” O’Sullivan said. “Ironically, the very temporary nature of the president’s own job seems to be fueling a legacy of doing permanent harm to middle- and working class families.”

(source:  The Hill