I know Bitsler and Bitcoinvideocasino doesn't block players from the US. If you're looking to bet on sports I recommend using Nitrogen, Onehash(betting without any account) and Cloudbet for live betting.
although lately fortunejack is going through some shadiness with a bug and missed payouts. I have never had a missed payout from fortunejack just what I see in their forum pages is shady in the last few weeks.
From time to time they receive complaints from different players eventually it'll get resolved. I've played several times on fortunejack and I barely had any problems. Whenever I encounter an issue, their support is always there to help.