They're really stepping up. Last year they dragged me into a hospital in cuffs and told the doctors to "inspect" inside my GI tract. That was a better part of a day affair along with a federal warrant and the works. A dog never even alerted (and even verbally told so by CBP, although the warrant lied and said otherwise). They also have a network of hospitals with staff openly hostile to tourists, who are fine acting even without a warrant or consent and a complaint to the state board results in the medical professional boards telling you that a patient has no right to deny consent even without a court order.
Few hours walking around in a border town and eating lunch from what I recall. When I crossed back there were a whole team of people working me over and HSI got involved. No idea what triggered them. When they found nothing they sent the debt collectors chasing me for the hospital bill, obviously that won't be paid so I look forward to the lawsuit.
edit: to note I don't know If I'm actually going to be sued, just will definitely find it humorous if they do so.
I would guess that the very temporary nature of your trip looked like you were just there to collect something and come right back. None of which justifies the subsequent outcome. Good luck in your lawsuit.
And elsewhere on order. Although Portland is within 100 miles, they were sent under a post 9/11 statutory authorization that would have enabled them to perform certain (not border/customs related) federal law enforcement actions anywhere.
