Unions representing construction workers that would directly benefit from building the pipeline feel stabbed in the back by unions that joined environmental groups to congratulate Obama for killing the project.

“People are pissed,” said one U.S. labor official who supports the proposed TransCanada pipeline. “The emotions are really, really raw right now. This is a big deal.”

“It’s repulsive, it’s disgusting and we’re not going to stand idly by,” Laborers’ International Union of North America General President Terry O’Sullivan told POLITICO. “The rules have changed. So we’ll react accordingly.”