Trump's campaign may have committed a COPPA violation

COPPA is the The Children's Online Privacy Protection Act and it limits what information can be collected online from minors. Trump’s sign up website did not have anything to confirm the age of people signing up for tickets, not even a self-certification that the person signing up was over 18.
As a result, the campaign could be liable for up to $42,530 in fines for every ticket registration by a minor because they were also collecting personal data for the campaign. Assuming 500,000 registrations by minors, that works out to a possible fine of .... $21 billion!