So much incorrect advise, so little time.
Please expand. My understanding is that you can lock the vehicle behind you, and he can't force you to open it. He can peer in the windows all he likes, but he can't search the vehicle. .
Of course he can force you to open it or open it himself if he has the appropriate suspicion. He does not ever need a warrant to search a car, EVER. That's been the law for well over 50 years, so anyone who says this doesn't have the first clue about the law.
And locked doors or locked boxes or whatever are no impediment. He can open them too, although some agencies have stricter policies regarding destructive searches.
Having removed you from it and frisked you, you no longer pose a danger to the officer, which is the purpose of a Terry frisk
Completely wrong, in either a house or a car. If he had reasonable suspicion, he can frisk you and the car (meaning generally the passenger compartment but not the trunk unless there is access back there from the passenger complartment). Same deal in a house. It doesn't matter if you are cuffed and removed before or after the frisk of the house or car.
1. Most appropriate response to "can I search the car?"=>"No. Am I free to leave?"
2. Are there any weapons in the car? "Am I free to leave?"
Of course you aren't free to leave. You have been detained for a speeding violation or whatever. Why do you think the red lights are on and you are stopped by the road.
Well, not to hijack but let me ask a slightly different question. What if a cop gets so physically out of line that you wind up defending yourself by stomping his or her ass so to the point he or she is no longer able to continue to be a threat?
Good luck. You're not the first big mouth with that idea. So far, they are all winless.
he was driving his own car with three friends in the vehicle. friend #1 reaches down and finds a plastic baggy with a white substance inside it, says "hey, what's this?" my brother, confused and beginning to get upset, says something like "uh...beats me..."
He probably wouldn't have been charged, without more, meaning fingerprints or whatever. Just having something in your car isn't possession unless the item is so conspicuous that you had to have known it was there.
"My sister, who serves as our family attorney, says that I'm never supposed to waive any rights. So, sir, I suggest that you get a warrant,
Well, your sister must be a half-arsed divorce attorney who barely passed the bar or she'd know that no officer ever needs a warrant for a car.
I've heard horror stories of people allowing a search...Seats cut open, door panels ripped off, carpet pulled up, etc.
Yeah, I've heard that Nixon killed Kennedy and that the CIA created AIDS to kill blacks and homos. This isn't going to happen unless a dog hits on your car or you have a history of drug smuggling. And in any event, they will pay for the damage if nothing is found. And no, it isn't a "black mark" on the officer's file unless they have a gob of them. Had a cute quote from drug smuggler (several prior convictions) a few days ago-- after the dog hit on her car-- "No way. I just had it detailed!" Probably needs to go to a better detailer.
If he has PC, he doesn't need your permission. So don't give it. If he has to ask, the answer is no.
Not really. Even with a warrant to search a house or anything else (computers etc.), cops are trained to ask for permission first. If there is no danger to the officers or that the evidence will be destroyed, then it's just more professional to ask first and, as someone else correctly pointed out, consent negates any later PC arguments.
Now, let me say that demeanor is important...whether you consent or refuse. If you seem like a shiitebag, the cop will work harder at hassling you or searching you. Cops aren't necessarily good at determining real dirtbags from you paranoid tinfoil-hat types. If you seem like an honest guy who is in a hurry, you'll get a cursory glance or none at all. I've often asked for consent to search (or whether they will consent to a polygraph) just to see the reaction of the person.