Now here's something hat I didn't know. The recent US ban on internet gambling, that entirely silly piece of prodnose law making that so enrages my mate Greg does not in fact apply to horse racing.
The result of this is that betting on such racing is still entirely legal right across the country. So it's possible to join a site like Xpressbet (click through the link to get there) and bet in legal safety. They run pari-mutual betting across race courses in America, Europe and Australia, so there's action nearly all the time for you to have a go at.
Thank goodness there actually was someone, at least one person, sensible around when that truly stupid law was passed, so that while card playing for money might be banned at least adults are, in part, still allowed to do what they want with their own money.