The Florida ACLU filed court papers yesterday supporting Limbaugh's argument that investigators violated his constitutional right to privacy when they seized his medical records in November to investigate whether he violated drug laws when he purchased prescription painkillers.
Looks to me that he is citing his right to privacy.
AFAIK, the only contention by Roy Black is the violation of the Florida statute governing medical record privacy. Now, perhaps the ACLU raised the issue in their filing, but I don't think the Rush team has.
The Florida Constitution does have a specific clause guaranteeing a right to privacy. I'm not a legal expert and cannot cite the article or section, but I know that it does exist. The article is unclear (typical for the agenda-driven rubbish that passes for "journalism" these days; never let facts get in the way of spin) about whether this action is in state or federal court, but I'm pretty sure it's state.