A ticket-reselling operation used a network of fake accounts to bypass Ticketmaster’s security protocols to grab hundreds of thousands of tickets to hugely popular tours for artists like Taylor Swift and Bruce Springsteen and then re-sold them for millions,

The lawsuit is part of a crackdown President Trump announced in March focused on curbing exploitative ticket reselling practices that raise costs for fans.

The U.S. Federal Trade Commission filed a lawsuit Monday against a ticket broker, alleging the company used illegal tactics to exceed purchasing limits for popular events and then resold tickets at significantly higher prices.