It's obvious the bans on Internet gambling is due to the fact it's hard to regulate and it's even harder to tax and when it comes down to it, it's all about money. The US only has themselves to blame, this isn't about protecting people from addictions because lets face it if you want to gamble legally you can go to a casino and if you want drugs you can walk down to the corner and if you want booze you can go to a bottle shop or bar. What's the difference between Internet gambling and going to a casino? The government can tax non-Internet based casinos...
If it gets that far and something isn't worked out prior, this will be an interesting test of Obama's merits as a president and where he stands on things like unrestricted and free Internet access. Given the US's harsh words against China's censorship over the years, it would be pretty ironic if the US were to block such a site.