What i know about gambling in the US

There are a lot of speculations about online gambling laws in USA, the fact is that there is no federal law against it, there is law that doesn't let the banks to allow deposits to gambling sites, but that doesn't have anything to do with you, most of the banks doesn't allow deposits with credit card, but e check still might work, also western union. Withdrawing from these sites happens in the same way, western union or check (the checks doesn't state they are from gambling site). If you feel not sure about how to deposit you can ask the support of your chosen gambling site, they will help you. 
In short, online gambling in USA is legal for anyone that is 18 years. While most of the land casinos are 21 +, this is unnecessary because the online casinos don't serve drinks, which is the only thing that keeps the land gambling over 21. 

The best and recommended gambling sites that accept USA players right now are the following: 

For sportsbetting(horse racing), casino and poker: Bookmaker
For sportsbetting, casino and poker: Intertops
Poker rooms: Americas Cardroom, Cake Poker
casino- Casino Titan

cool story bro

online casinos are the biggest scam. 

yeah heard biggest scam ever online casino a solid BJ player strategy lost 100 consecutive hands.

  HE called them up and asked for tech support or something he got hung up on finally went to feds got that site shut down.

forget name of casino site but it was fraud no matter what game you played you lost.

after about 100 people complained they got shut down and owners got banned from ever having an online casino or poker site again

The OP recommends Casino Titan as the top online casino.  So it sounds like there is at least one "legit" online casino.  It's not clear whether the online casino critics are being objective or just upset that they lost their money like 99% of the customers of "legit" casinos do eventually.

How is that possible?