It’s a pretty silly reason to begin with. Online casinos aren’t even interested in underage gamblers, as they don’t happen to have a lot of expendable income, plus I would bet the one’s that have stolen their parents credit cards end up becoming chargebacks anyway. It wouldn’t be all that difficult to check someone’s true age prior to letting them deposit.
Congress definitely is way behind in what technology is capable of. His other point about there are many more addicted gamblers due to online gambling is like saying there are more pedophiles because of the internet. You know what, there were the same number of pedophiles before, and it is the internet that is providing a means to catching them. As for addicted gamblers, how easy would it be to regulate the industry and put triggers in place to identify an addicted gambler and offer them help. Think the land-based casinos have a way of doing this?