Some states have banned gambling sites
There are gambling sites, which ban some of its American players because there are some ambiguities on the laws governing gambling itself. Some states like click here the Illinois have banned online gambling while other states have allowed the existence of such.
Although Illinois opted to ban online gambling in the area, gaming for charitable causes are allowed within the state. The non-profit organizations are still allowed in raising funds through gambling.
While the industry of gambling is consistently expanding, the rules governing gambling also changes over the years. So, be aware on the states where gambling is banned if you are into gambling.