Money laundering is illegal, people, while this is not. How is it like money laundering? If I sold pot I grow in basement and then deposit it in our chimney cleaning business account, which is a legitimate business, but selling pot isn't, THAT would be money laundering.
It isn't illegal to buy gift cards with credit cards, or the stores wouldn't do it. It is not illegal to buy a money order with a Visa Gift Card, or the stores wouldn't do it. And it's not illegal to deposit money orders into a bank account. It's not money laundering, and it's not kiting either.
There are dozens of threads on flyertalk for anyone interested in doing what we do. It's profitable and almost too easy. It is fragile, however. Fragile because my credit union could start limiting MO deposits. Walmart could stop selling money orders with debit cards. Staples could stop selling VGC's. And finally, Chase could put an end to 5X on office supplies, or they could just shut down our accounts. So far, so good. But I don't take anything for granted, nor would I buy $20K in gift cards at once. I buy six at a time, liquidate, then buy another six.