Some casinos have identified me as an AP and marked my players card so that I can't use it at the blackjack tables anymore. My brother looks very similar to me and offered to let me use his ID to get a new player's card and play with it instead.

Is it legal to play with his card?
Would it be legal if I redeemed comps with his card and ID?
Could I get into a lot of trouble with the casino or the law for doing this?
Do they keep the photo from your ID on record? (Does it matter whether my brother looks like me?)