Environmental groups, including the Natural Resources Defense Council, the Bold Alliance and the Sierra Club, filed suit against the federal government on March 30, seeking to stop the Keystone XL oil pipeline.
The suit, filed in federal district court in Montana, where the pipeline will cross the U.S.-Canadian border, claims the State Dept. illegally approved a presidential permit on March 24 that will allow the 1,200-mile TransCanada pipeline to be built.