Hamlet, actually, Terry stops are not are not seizures done without probable cause.
Here’s a nice summary of the Terry rule, taken from the syllabus of Minnesota v. Dickerson:
[QUOTE]
Terry permits a brief stop of a person whose suspicious conduct leads an officer to conclude, in light of his experience, that criminal activity may be afoot, and a patdown search of the person for weapons when the officer is justified in believing that the person may be armed and presently dangerous. This protective search - permitted without a warrant and on the basis of reasonable suspicion less than probable cause - is not meant to discover evidence of crime, but must be strictly limited to that which is necessary for the discovery of weapons which might be used to harm the officer or others. If the protective search goes beyond what is necessary to determine if the suspect is armed, it [508 U.S. 366, 367] is no longer valid under Terry, and its fruits will be suppressed.
[QUOTE]
The stop - that is, the seizure - must be done on the basis of probable cause. The subsequent search, only for weapons, may be done on the lower grounds of reasonable suspicion, and only to protect the officer. To me, the pat down doesn’t represent a lessening of freedom.
As for your other point, certainly DUI roadblocks are constitutional, because the Supremes said they are. IMO, the Supremes screwed the pooch - Sitz is incompatible with Indianopolis v. Edmond.
Edmond applies the traditional rule to roadblocks - no probable cause, no roadblock. Sitz says that this rule doesn’t apply to DUI roadblocks because they perform a predominately civil function - the removal of drunk drivers from the road. This distinction is absolute bullshit - show me one person caught for DUI who was only civilly sanctioned.
But, the Supremes say, that’s OK because while there are criminal penalties for DUI, there are also civil ones, most obviously license suspension or revocation. In Edmonds, which dealt with roadblocks to check for drugs, the sanctions were criminal, so the roadblocks were illegal. That distinction doesn’t exist.
If you are busted for drugs, you are subject to civil sanctions. The most obvious one is civil forfeiture - including of the very car you were stopped in. Other civil sanctions include denial of student loans, denial of employment in many government jobs, etc.
So, a roadblock to check for one type of activity, which can lead to both criminal and civil sanctions, is permissible, but a roadblock to check for another type of activity, also sanctionable both civilly and criminally, is impermissible. Does that make sense?
Sua