Why would the NJCCC care about players making change for one another?

[DrewOnTilt]

On two recent occasions, different managers at the Borgata told me that the New Jersey Casino Control Commission has been giving grief to the poker room management because of players trading chips and cash with each other. On Friday, I saw a floorman stop a player from buying a rack of chips from another player and force the player to buy from the chip runner. There was a sign posted in the high limit area that stated something to the effect of "Chips must be purchased from the dealer or the cage."

One manager told me that NJCCC agents have been sitting in the surveillance room and specifically watching for poker players buying chips from each other.

This makes no sense to me. Why would the NJCCC care if I buy a rack of chips from someone at the table? Furthermore, do they have any authority to stop it? A ban on chip transactions between players would be very difficult to enforce.