39 U.S.C. § 4057 specifically requires a warrant for certain classes of mail and parcels, and therefore any evidence obtained in a warrantless search would be inadmissible.
Of course, it doesn't mean that such evidence would be especially compelling to a judge or jury in those circumstances, but that's a separate matter.
If I gave you a box and asked you to give it to someone else, you have the legal right to open it up and do whatever you want to it. The most I could do is sue you, civilly, for breaking a defined contract if one was in place, but for the most part I'd be limited to calling you names.
Contract law in USA is that weak? They have authority? As in the law authorises anyone to access anything just by virtue of being contracted to move it, not even ownership? Contractual obligation can't override that authorisation .. are you sure?
That would mean, for example, that your taxi-driver has the right to go through your bags by virtue of you asking them to put them in their car. Or that Starbucks have a _right_ to access your laptop if you left it in the store for any length of time. Or if you park in a private parking lot the owner could break in, hot wire and drive your car around.
Or are you saying that only certain possessions are treated as if you didn't own them and only certain companies contracts are treated as null?
tl;dr http://en.wikipedia.org/wiki/Trespass_to_chattels, but yes it's a tort.
But most likely, the contract with UPS/FedEx/etc would afford broad abilities to inspect and search packages for "safety and quality control" reasons, or whatever else.
To take his example, if I carelessly left my laptop in a Starbucks, I have not given anyone the right to use, transport or otherwise inspect my laptop. I can assume some right to privacy over the contents of it. But if I gave my laptop to a company that specializes in transporting laptops between Starbucks locations on behalf of patrons, one can pretty much assume (given today's contract binding society) that they have some clause in the contract between us that says that they are not responsible maintaining the content of the laptop, and can at their discretion open it up and inspect the contents to be sure that they are not the facilitator in transporting illegal or "bad" data (malware source code, child porn or terrorist manifestos, etc). They don't have the explicit right to open it just because, but in giving it to them I've given them the right to do so.
Note that the rule doesn't require suppression of just any evidence obtained illegally -- only evidence obtained in violation of the defendant's constitutional rights (and, in particular, his right to privacy). Relatedly, note that the suppression rule is not actually written into the Fourth Amendment. It is a judicial creation to deter particularly egregious violations of the Fourth Amendment. http://en.wikipedia.org/wiki/Exclusionary_rule#Limitations_o...
You're right, if they ask that third party to see it. But if they don't ask, they hack in, then they're breaking the USC that protects against unauthorised access to computer systems [18 USC 1030?].
The third party usually will have a legal requirement not to divulge your info without a warrant (except perhaps under conditions threatening national security). I'm not sure on this for USA, most countries have laws protecting personal information; your contract binds the company to not disclose information but a warrant supersedes that ... but presumably there's not a general regulation forcing companies to disclose information to authorities who merely request it as opposed to getting a warrant. That would be most undemocratic.
Thus under rule of law, despite the Fourth not applying, the FBI would still need to get a warrant before either hacking in or making the company disclose the information, no?
Like, they can open your mailbox as the postal service own it, but if it's locked then they'd need to get the key/authorisation from the owner (or they'd break the law, breaking and entering or bypassing security or somesuch). If the owner says "no" then they'd need a warrant (legally speaking) to force the owner to open the box and take your post out. If they just break in and take the post it's not a Fourth Amendment violation against you, AFAICT, but it's still unlawful.
IMO the evidence should still be used but the fact of the evidence being obtained means that if submitted by the state it's also evidence that a person working for the state committed a crime. Rule of law means that person should be tried as should any co-conspirators. But this last para is just my idea of democratic responsibility and not how things are.
Which makes it even stranger, because I don't know how the judge would reconcile that theory with the third-party doctrine, which (in my layman's understanding) seems to be about what you said; namely that since some person(s) shared all the information in the image with the ISP, it wouldn't be subject to anyone's Fourth Amendment protection. Or is there some line between a hosted email account and a VPS; where the email has been "shared" with the host, but the VPS's contents can't sufficiently be shown to have been "shared" and thus are still protected? [1]
[1] https://www.quora.com/Fourth-Amendment/Does-the-third-party-...
That's the least effective rebuttal I've heard in a while.
Obviously the government is going to do whatever it can to prosecute the guy, rules be damned.