Sports betting now is legal in 36 states and Washington, D.C. But laying down at a bet as a teenager is illegal in every state. InvestigateTV and its reporting partner, the Arnolt Center for Investigative Journalism at Indiana University, looked into the secretive world of underage gambling on offshore gaming sites and found there’s little public information about these operations. But this much is clear: Many of these sites do not have any protections in place to guarantee that the person betting is of legal age to do so or that winnings actually will be paid.