[vkou]

When the dog's accuracy can't be tested, then a search based on the dog giving an indication of "There are drugs here" is no different then a search based on a magic 8-ball giving an indication of "There are drugs here".

Every time this technique leads to a search that is used to secure a conviction, it erodes your rights, as a non-criminal, against arbitrary search and seizure.

[ptaipale]

There's a difference in the way people see this here in Europe, because here a "probable cause" is not needed for searching for drugs. Particularly at the border controls, everyone is subject to searches.

(Same applies for e.g. DUI testing on the roads; the police has the right to take alcohol test of any driver, without anyone looking like they're driving badly.)

Any arbitrary seizure, if only based on dog indication, is of course a horrible miscarriage of justice.

[vkou]

Borders are civil liberty free zones, by design. As are warzones, places that have declared martial law, and prisons.

DUI testing is different. In many jurisdictions you do not have to submit to it, if you are fine with losing your driving privileges - which is not a criminal penalty.

I'm not super pleased about it, but there is typically a clear line - some voluntary behavior voids your liberties. Involuntary behavior generally should not.