A Three-Tier Primer

About three years ago I was at a party in San Antonio when I struck up a conversation with a Texas state legislator. After a respectable amount of small talk, he grabbed my sleeve and said, "Listen, Harry, don't you work in the beer business? I'm getting pressure from a certain large retailer to take a look at the alcohol code's cash law. Tell me, what's the public policy benefit of having a cash law?"Now, I've been in the beer