[BillytheKidd]

As explained to me by Hawaiin Gardens floor, their no-limit games require all raises to be twice the previous bet. So in this case it would be a call because the previous bet was $6, so the raise would be to $12. Although one could argue the more than half the raise amount. I still think they are wrong about this (and not only because it cost me an opportunity to reraise with my AA).

However, in this OP's case it is clearly a call because the first chip is inqdequate to call making the second chip "oversized" and without declaring raise it is automatically a call with an oversized chip.