You cannot carry a concealed weapon in Illinois. The FOID is for any and all firearms. The card is necessary for all gun purchases as well as ammunition. Like you said, it is an easy $5 for the ISP.
Back to Tank, Musky is right, they didn't just raid his house b/c of a FOID card issue, he has got a lot more issues than that. But in the end, that was what he was cited for.