I'm unable to locate a link now but before the Indiana primary, I recall InsiderAdvantage posting an article on their site complaining about how Indiana prohibited automated telephone calls even for informational surveys. IA said they used live operators for their Indiana polls instead of their usual robopolling methods, but they considered in-person interviews to be a less reliable method, and they griped that the Indiana law was unreasonable.
The article also mentioned that the Indiana state AG was initiating proceedings against companies that had conducted robopolling in the state. Since both Rasmussen and SurveyUSA routinely conduct their polls in this manner and, and don't have the means to conduct in-person interviews, and since both released primary polls of the state, I concluded that it was those two companies that were being targeted.
Does anyone have any further information on this?