It seems that after all the crap TAB has taken on the issue of business owners being able to prohibit weapons in their business' he may be right, but not as he claims, on the basis of property rights.
Instead, it seems that the Bill of Rights is a limit on GOVT action, that does not apply to non govt entities.
http://www.quickanddirtytips.com/business-career/legal/store-security-and-your-rights?page=all.......................................................snip..............................................
First, it is important to identify what is not at issue here: the Fourth Amendment. As I discussed in previous episodes, the Fourth Amendment generally allows people to be free from unreasonable searches and seizures. But, this protection only applies to conduct by the government and its agents. This is known in constitutional law as the “state action” doctrine, and generally means that, unless the government takes action, the protections afforded by the Constitution are not implicated. Police officers are agents of the government, and when they act, your Fourth Amendment rights kick in.
So, if a police officer stopped you as you walked out of the store without sufficient reasons, then you would be able to invoke the protections of the Fourth Amendment against the search. However, because the security guard at Best Buy is not an agent of the government, the Fourth Amendment does not apply. The security guard is not compelled to abide by Fourth Amendment requirements, including the need for a warrant or probable cause to search. His search does not violate your Fourth Amendment rights.
- See more at:
http://www.quickanddirtytips.com/business-career/legal/store-security-and-your-rights?page=all#sthash.Q6CVA4Vq.dpuf..................................................snip................................................................
There is a lot more to the article, but since it deals with stores comparing your receipt to what's in the bags I didn't bother posting it.