in a daylong blockade of tanker traffic associated with the existing Trans Mountain line. Last week, the Tiny House Warriors wheeled the homes into a provincial park that sits on the site of a historic village near Clearwater, British Columbia, in an assertion of their title to the land. On Saturday, the Royal Canadian Mounted Police singled out and arrested Manuel, whose livestream of the incident has garnered more than 500,000 views on Facebook. She was detained on a charge of “criminal mischief” and released later that day. The struggle against the expansion, Manuel told The Intercept, could become “the Standing Rock of the north.”

That’s exactly what law enforcement agencies on both sides of the U.S.-Canada border fear. For more than a year, U.S. and Canadian authorities havebeen girding for a mobilization comparable to the 2016 resistance in North Dakota, according to law enforcement communications and government reports obtained by The Intercept. In Canada, Trudeau received a Cabinet memo discussing the implications of Standing Rock for Trans Mountain one week after his administration approved the pipeline expansion.In Washington state, where a branch of the existing Trans Mountain line feeds processed tar sands bitumen to four refineries along Puget Sound, law enforcement agencies are preparing for the anti-pipeline struggle to spill over to the U.S. side of the border. The sheriff’s office in Whatcom County monitored activists’ plans to travel to British Columbia for a recent Trans Mountain protest, and information collected was shared with U.S. Customs and Border Protection, the Washington State Patrol, and the