I am horrified that this is happening in my state. Portland, as referenced in the article is only 30 miles north of me. When asked, the governor's office stated that they were simply handing out pamphlets and giving information as to how truckers, etc. could be of service.
They have no jurisdiction and not authority outside an airport, with the possible exception of a train station or bus station. Unless sworn and deputized by a lawful police officer or sheriff's deputy they are nothing more than out of place rent-a-cops. They have no authority or power to stop, interfere with, or search any person or private vehicle in these scenarios.
This must be put to an end before a precedence is established.