"If Rush were just an ordinary citizen, the prosecutor nor the police would have cared at all."
Charles Crist, the Republican Florida AG disagrees with you -
"Why is it so important to stop doctor shopping? It would save lives. .... Subtracting alcohol, prescription drugs accounted for 60 percent of drug-related overdose deaths in 2002. Everything possible must be done to prevent these deaths."
http://www.myfloridalegal.com/NewsBrie.nsf/OnlineBrief/58EDCCEEDD397B3785256D720045199F
Talk is cheap. Again, how many other prosecutions have there been for doctor shopping in that jurisdiction?