US Casinos covers a lot of territory. Some casinos do not accept US players and others do so if you are looking for one that does then you have to check out the website and see if they do.
There is also a huge spread when it comes to US Casinos and what you can do at one. Slots of all types, video games, table games, sports betting, horse and dog racing, and bingo do not even begin to mention all of the options.
Some US casinos are able to be played right in your computer browser, meaning they require no download. Others have to be downloaded in order to play. Be assured though that there are numerous options if you are seeking a US Casino.