Why some online casinos do not accept bets from US citizens?

No federal laws actually exist that allow prosecutions of online gamblers, but certain laws prevent a number of online casinos from allowing US citizens to bet. The only way for online casinos to work around these laws is to obtain a permit or license in countries where such activity is legal. This information is only of concern to gamblers who reside in the US. Most countries have different laws when it comes to gambling, for example, online gambling in the United Kingdoms is legal, while in Germany, the state of online gambling is the same as in the US. Consider yourself advised.