Paul Lewis and Adam Federman report:
The FBI breached its own internal rules when it spied on campaigners against the Keystone XL pipeline, failing to get approval before it cultivated informants and opened files on individuals protesting the construction of the pipeline in Texas.
Internal agency documents reveal for the first time how FBI agents have been closely monitoring anti-Keystone activists, in violation of guidelines designed to prevent the agency from becoming unduly involved in sensitive political issues.
Read more on The Guardian.