The "Law Dictionary (Sixth Edition)" by Steven H. Gifis says "...the right [to privacy] may not exist where there is some other compelling state interest, such as curbing the use of illegal drugs, 429 U.S. 589..." and also goes on to say "[the Fourth Amendment's] expectations of privacy extend to a person's home (in such areas as use of contraception, obscene materials, or marijuana in a private residence)". "Marijuana in a private residence" and "Fourth Amendment" just mean that the state can't get a valid search warrant, to search just for that alone. Or at least that used to be the case. Because all drugs were legal at the time of the adoption of the US Bill of Rights in 1791. But the right to privacy may protect illegal drug use. Did Rush Limbaugh know this?