We had the same problem in Texas, then they got smart and issue a "credit card" that only allows you to buy food, if you try to buy smokes or booze it rings up as a cash only sale!
My problem with Texas Department of Human Services is that many illegals abuse the system by coming in with their children, saying they are not married, getting a Lone Star card, AND money to provide clothing and stuff for the children, yet at night guess who pulls up home from work? Their illegal alien husband or a b/f living with them and sharing the bills and benefits!
TX DHS does have armed investigators but there are simply too many abusers to keep track of and crack down on, besides, you are basically a "private eye" for the state and it involves long and odd hours and documentation.
All in all though besides that, it is a pretty good system as all purchases get documented by DHS, so no one person can say Ï need a surplus of this or that, and turn around and sell it."