You can in Las Vegas.
Otherwise, daily fantasy sports (FanDuel, Draft Kings, etc) is as close as you'll come in most states. Online poker is banned in all but three states (and they are mostly intra-state/sucky), and IMO it's just a matter of time until DFS gets outlawed as well (it's already illegal in 4-6 states).
American freedom only goes as far as legislated morality (usually with a ambiguous religious basis) lets it.
In the next episode, David Aguilar asks for suggestions of countries he can move to.